13. Change log

This version of the documentation is development version 1.8.0.dev1 and contains the master branch up to this commit:

  • Changed remaining percent-style / format() to f-strings by Andreas Maier at 2024-05-05 05:22:37

    Signed-off-by: Andreas Maier <andreas.r.maier@gmx.de>

13.1. pywbem 1.8.0.dev1

This version contains all fixes up to version 1.7.x.

Released: not yet

Incompatible changes:

  • Removed support for Python 2.7, 3.6, and 3.7. pywbem now requires Python >= 3.8. (issue #3145)


Bug fixes:

  • Fix issue where pywbemlistener that fails startup can cause thread exception. See issue #3157

  • Fixed pywbem install error with ImportError for “._vendor.nocasedict” on Python 2.7. Fixed the install tests to catch this error. (issue #3163)

  • For Python 3.6 and 3.7, changed macos-latest back to macos-12 because macos-latest got upgraded from 12 to 14 and no longer supports Python 3.6 and 3.7.



  • Eliminated a warning about about ambiguity of the package list when building the wheel distribution archive.

  • Added ‘.pytest_cache’ and ‘.ruff_cache’ directories to be removed in ‘make clean’.

Known issues:

13.2. pywbem 1.7.0

This version contains all fixes up to version 1.6.3.

Released: 2024-04-15

Incompatible changes:

  • Dropped support for Python 3.5. (issue #2867)

  • In order to make life easier for people that package pywbem into Linux distros, vendorized the nocasedict and nocaselist packages. They have been removed from the package dependencies. (issue #3141)

  • The ‘pywbem.ValueMapping’ class will now raise a ‘pywbem.ModelError’ for any missing or extra items in the ‘Values’ qualifier, compared to the ‘ValueMap’ qualifier. Previously, ‘IndexError’ was raised. (issue #2991)

  • Installation of this package using “setup.py” is no longer supported. Use “pip” instead.

  • Update to support urllib3 dependent package version 2.0+ for Python version 3.7+ which limits the SSL library implementations (ex. OpenSSL, libreSSL) and requires TLS protocol >=1.2 (ex. OpenSSL versions >= 1.1.1). Pins urllib3 version to < 2.0 for Python versions < 3.7. Note that pywbem 1.6 actually allows urllib3 version 2+ usage because the requirements version specification was not pinned. However, the minimum Python version for urllib3 version 2.0+ is now Python 3.7. If an older OpenSSL or incompatible SSL library is used, the import of urllib3 package or communication with a WBEM server can cause exceptions. See pywbem issue #1302 and the pywbem documentation trouble shooting for more information.

Bug fixes:

  • Addressed safety issues up to 2024-03-27.

  • Addressed Dependabot issues up to 2024-03-27.

  • Fixed a doc build issue with Sphinx 6.x (issue #2983) and addressed some of the Sphinx warnings during doc build.

  • Fixed coveralls issues with KeyError and HTTP 422 Unprocessable Entity.

  • Circumvented the removal of Python 2.7 from the Github Actions plugin setup-python, by using the Docker container python:2.7.18-buster instead.

  • Fixed missing dependencies in minimum-constraints.txt.

  • dev: Fixed UnboundLocalError for membername in Sphinx autodoc.

  • Test: Circumvented a pip-check-reqs issue by excluding its version 2.5.0.

  • Development: Fixed dependency issue with safety 3.0.0 by pinning it.

  • Test: Upgraded GitHub Actions plugins to use node.js 20.

  • Test: Fixed issues resulting from removal of support for pytest.warns(None) in pytest version 8. (issue #3114)

  • Fixed new Pylint issue for unused variable ‘exp_result’. (issue #3113)

  • Test: Fixed issue in test_recorder.py where format of OrderDict repl output changed with python 3.12 (see issue #3097)


  • The ‘pywbem.ValueMapping’ class now allows controlling what should happen when the ‘Values’ qualifier has missing or extra items compared to the ‘ValueMap’ qualifier, by means of a new ‘values_default’ parameter of the respective factory methods. If ‘values_default’ is None (default), a ‘pywbem.ModelError’ is raised for missing or extra ‘Values’ items. If it specifies a string value, missing items in the ‘Values’ qualifier are filled up with that value, and extra items in the ‘Values’ qualifier are truncated. (issue #2991)

  • Add end-end test for indications where an OpenPegasus server in Docker container is the WBEM Server and pywbem is both the client that creates indication subscriptions the indication listener. This test uses the OpenPegasus container used for other end-end tests.

  • Split safety run out of “check” make target ino a separate “safety” make target and moved its run to the end of the test workflow.

  • Update handling of request exceptions in CIM_http.py to account for changes to the urllib3 exceptions API that occurred in urllib3 version 2.0.0 and keep the capability to handle the urllib3 exceptions API prior to versiion 2.0. (see issue #3006)

  • Add end2end tests for operation timeout. (see issue #2181)

  • Split safety runs into an ‘install’ and an ‘all’ run. The install run uses a new minimum-constraints-install.txt file that contains just the direct and indirect install dependencies and must succeed. The ‘all’ run uses the minimum-constraints.txt file which includes the minimum-constraints-install.txt file and that run must succeed when releasing a version, but may fail otherwise (in scheduled runs or normal runs). This reduces the burden of fixing safety issues that affect only development packages.

  • Document the issue and possible corrections for the pywbem listener possibly losing indications. Modifies the indication tests in the examples directory to give better visibility and control of what these examples are doing. See the documentation troubleshooting section. See issue #3022.


  • Replaced the safety_ignore_opts in Makefile that is used as the basis for ignoring safety issues with the use of a .safety_policy_file defined by the safety utility.

  • Add a number of new ignores for additions to the safety issues lise May 2003

  • Clarified the use of the host parameter on the WBEMListener class. (see issue #2995)

  • Bring example pegasusindicationtest.py up to date and extend to be used with WBEM server in a container. (see issue #2993)

  • Update dev-requirements.txt, minimum-constraings.txt, .safety_policy.json for new safety issues with GitPython and add ruamel-yaml.

  • Disable cyclic-import pylint warning.

  • Fix issue in pywbem_mock._base_provider where __repr__ had invalid parameter (see issue #3036)

  • Fix new feb 2024 safety issues, GitPython, Jinja2, JupyterLab. Added to safety ignore and fixed in requirements files.

  • Extend support to Python version 3.12 (see issue #3098). This includes changes to package version requirements in requirements.txt, dev-requirements.txt, minimum_constraints.txt

  • Add ignore for gitpython new safety issue 2024-2.

  • Moved the version constraints for the ‘idna’ package into the pywbem installation dependencies since it is an indirect dependency (pywbem -> requests -> idna).

  • Changed the format of the README and README_PYPI files from RST to Markdown, to address formatting issues with badges on the Github site (issue #3133).

13.3. pywbem 1.6.0

Released: 2023-01-14

Bug fixes:

  • Fix issue where we could get HTTP retries upon HTTP read timeouts from the server. Changed to not allow urllib3 to do retries on post operations (the CIM/XML operations all use post and duplicates of some operations (invoke, update) could cause data integrity issues). (see issue #2951)


  • Support for Python 3.11. (issue #2904)


  • Ignore new safety issues for wheel, safety, and py packages and update values in minimum-requirements.txt.

  • Update github actions matrix to restore tests to running after github update of ubuntu-latest to v 22.04. This is because python versions 3.5 and 3.6 cannot be installed with setup-python github action for CI tests and ubuntu-22.04. (see pywbemtools issue # 1245 for details).

  • Modify Makefile so safety check does not cause fatal github test failure. (see issue #2970)

  • Update the version of the OpenPegasus server Docker image used in tests to the docker image kschopmeyer/openpegasus-server:0.1.2 which used OpenPegasus 2.14.3 located in the github OpenPegasus repository. This image is much smaller (110 mb) but the same set of models and providers as the previous image.

  • Modifications and pylint ignore statements for new pylint test for dict form dict(a=1) which is slower than {‘a’:1} and other new tests in pylint 2.16.0

  • Disable/fix Sphinx WARNING: reference not found messages. Hide about 270 msgs because they are probably a Sphinx issue. Fixe about 10 as they were docstring formatting issues (see Issue #3065)

Known issues:

13.4. pywbem 1.5.0

This version contains all fixes up to version 1.4.2.

Released: 2022-10-12

Incompatible changes:

  • Exceeding the ‘WBEMConnection’ timeout now results in raising ‘pywbem.TimeoutError’ in some cases where previously ‘pywbem.ConnectionError’ was raised. (issue #2853)

  • Changed the file permissions of setup.py to no longer be executable, in order to encourage transition to use pip install instead of executing setup.py install, which was deprecated by setuptools.

  • The removal of internal symbols from the ‘pywbem_mock’ Python namespace may cause name errors in your code, if you were using them. (related to issue #2888)

  • The pywbem_mock default instance writer (pywbem_mock/_instancewriteprovider.py) added checks for creation/modification of instances to validate that the reference properties of associations define existing instances if the property values exist. Previously they validated only the correct value type. (see issue #2908, extension to bidirectional inter-namespace associations)

Bug fixes:

  • Fix issue where the DeepInheritance parameter not passed to the mocker OpenEnumerateInstances method so the result is that the mocker always uses the default (DeepInheritance=True). (see issue #2839)

  • Test: Mitigated incorrect version of testfixtures package on Python 3.5 by pinning it to <6.4.0 on Python 3.5. (issue #2855)

  • Documented that the pywbem MOF compiler does not support the “EmbeddedObject” qualifier with a class definition. (issue #2340)

  • Docs: Changes in autodocsumm and Sphinx versions to pick up final fix for issue #2697.

  • Re-enabled pylint on Python 3.5 (issue #2674)

  • Increased pylint to >=2.10 on Python >=3.6 to pick up fixes in similarity checker and enabled similarity checker again on pylint >=2.10 (issues #2672, #2673)

  • Excluded setuptools 61.0.0 because it breaks installation via “setup.py install” (issue #2871)

  • Resolved new issues reported by Pylint 2.13 (issue #2870)

  • Fixed that the added setup.py commands (test, leaktest, installtest) were not displayed. They are now displayed at verbosity level 1 (using ‘-v’).

  • Previously, the sending of CIM request messages was retried in case no response was received within the timeout. This could potentially have resulted in executing operations multipe times. That is an issue for non-idempotent operations such as instance creation/deletion or method invocation. Fixed that by retrying now only during connection setup, but not for the sending of CIM request messages. (issue #2853)

  • Changed the default timeout of ‘WBEMConnection’ from ‘None’ to 30 seconds. This prevents waiting for operation completion forever, by default. (issue #2853)

  • Pinned “certifi” to <2020.6.20 on Python 2.7 because the install test using “setup.py install” started failing because it installed a version of certifi on Python 2.7 that properly declares that it requires Python >=3.6.

  • Added a note to the install section of the documentation that installation via setup.py install has been deprecated by setuptools.

  • Removed internal symbols from ‘pywbem_mock’ Python namespace, and added the ‘config’ submodule to the ‘pywbem_mock’ Python namespace. (related to issue #2888)

  • Fixed invalid references in the documentation. As part of that, added class ‘MOFWBEMConnection’ to the ‘pywbem’ namespace, moved class ‘IterQueryInstancesReturn’ from the scope of method ‘pywbem.IterQueryInstances’ to the ‘pywbem’ namespace. (issue #2888).

  • Fixed the name of the cythonized distribution archive.

  • Fixed new formatting issues raised by flake8 5.0.

  • Fixed issue in pywbem_mock/_wbemconnection_mock.py add_namespaces where namespaces that are added with add_namespace() after an interop provider is defined do not show up in the list of namespaces. It now uses server.create_namespace() if the interop namespace and namespace provider exist. (see issue #2865)

  • Fixed a RecursionError exception raised by flake8 on Python 3.6 and 3.7. (issue #2922)

  • Fixed issue in pywbem_mock instancewrite providers where Create/Modify of an instance with reference properties fails if host set in reference property (i.e. CIMInstanceName). Now issues a warning and ignores the host value since pywbem_mock does not handle cross-host associations. (see issue #2920)

  • Fixed python syntax issue in example/pegasus_indication_test.py


  • Added support for the new ‘CIM_WBEMServerNamespace’ class used in the DMTF WBEM Server Profile. In addition, the WBEMServer.create_namespace() method now uses the same class name for the new namespace that is already used for existing namespaces. (issue #2845)

  • Docs: Clarified that the timeout parameter in ‘WBEMConnection’ is for completing a CIM operation to a server or a CIM indication delivery to a listener. (issue #2853)

  • Improved the handling of exceptions raised by the “requests” and “urllib3” packages in pywbem, so that more meaningful messages are used. Exceeding the ‘WBEMConnection’ timeout now results in raising ‘pywbem.TimeoutError’ in some cases where previously ‘pywbem.ConnectionError’ was raised. (issue #2853)

  • Extend pywbem_mock creation of instances of associations to provide for bidirectional inter-namespace associations. Previously cross-namespace associations created in pywbem_mock were only visible in the namespace in which they were created. (see issue #2908)


  • Removed support for Python 3.4. It had been deprecated since pywbem 1.0.0. (issue #2829)

  • Modified compiler and pywbem_mock to allow creating instances from abstract classes because SNIA ignored DMTF rule making this illegal and many MOF compilers also ignored it. Pywbem now issue a warning from the MOF compiler if an instance of an abstract class is compiled but complete the compile and another warning from pywbem_mock.CreateInstance if the instance is for an abstract class. (see issue #2825)

  • Fix issues in manual test run_cimoperations.py that resulted from changes in the pywbem APIs. Since this was manual test it was not regularly used. Changes included removing tests for extra parameters which now cause failure of api.

  • Clarify why the iterEnumerateInstances and IterEnumerateInstancePaths always return the host name in the response. (see issue #2841)

  • Changed build process for distribution archives to use the build package.

  • Document a limitation in the IterQueryInstances request method (it delivers instances for Open/Pull after the request to the server is complete). (see issue #1801)

  • Added security issues 50748, 50571, 50664, 50663, 50892, 50885, 50886 to Makefile ignore list of new security issue August and September 2022.

  • Fixed issue with mock namespace provider that would acreate the same namespace twice under some conditions (i.e. same name property but different path on CreateInstance. (see issue #2918)

13.5. pywbem 1.4.0

Released: 2022-01-01

Bug fixes:

  • Aligned minimum versions of pip,setuptools,wheel with pywbemtools, nocasedict,nocaselist. This increased the minimum version of pip on Python 3.5 to fix an issue.


  • Improved verbosity of namespace creation and deletion: Added optional ‘verbose’ parameters to the create_namecpace() and delete_namespace() methods of WBEMServer, and to the add_namecpace() and remove_namespace() methods of FakedWBEMConnection (and subsequently to BaseProvider) in the mock support.

13.6. pywbem 1.3.0

This version contains all fixes up to version 1.2.1.

Released: 2021-12-04

Incompatible changes:

  • The WBEMListener.start() method may raise new exceptions pywbem.ListenerPortError, pywbem.ListenerPromptError and pywbem.ListenerCertificateError. The OSError and IOError exceptions raised in earlier versions may still be raised for other, less common cases. For details, see the corresponding item in the Enhancements section, below.

  • Changed ‘SubscriptionManager.add_filter()’ method to use the ‘SourceNamespaces’ property (allows multiple namespaces) of the ‘CIM_IndicationFilter’ class instead of the deprecated ‘SourceNamespace’ property (allows only single namespace). This changed the name of the positional ‘source_namespace’ parameter to ‘source_namespaces`. The new parameter allows both string and list of strings as values.

    This change brings the subscription manager in line with the incorporation of the ‘SourceNamespaces’ property made to this CIM class definition by DMTF CIM schema release 2.22.0.

    An optional ‘source_namespace’ keyword parameter has been added to the ‘add_filter()’method to account for any case where a WBEM Server cannot handle the SourceNamespaces property. The primary incompatibility will be that the instance created for CIM_Indication filter now has a property named ‘SourceNamespaces’ instead of ‘SourceNamespace’. See further comments below and issue #2725.

  • Changed the ‘SubscriptionManager.add_filter()’ method to no longer allow specifying the ‘filter_id’ parameter for permanent filters. The documentation had already disallowed that case, but the code allowed it. (issue #2757)

  • Added code to fail compile or creation in pywbem_mock of instance of Abstract class. Before this the WBEM server might fail the attempt but the MOF compiler and pywbem_mock would build the instance (see issue # 2742).

  • The new simplified format of the automatically generated ‘Name’ property of owned indication filters causes existing filters with the old format to be ignored and a Python warning of type ‘pywbem.OldNameFilterWarning’ will be issued. Such owned filter instances need to be either removed as owned filters with a prior version of pywbem, or as permanent filters with this version of pywbem. (issue #2765)

  • Removed the ‘pywbem.WBEMSubscriptionManager.add_listener_destinations()’ method, because the new naming approach for listener destinations requires either a name or an ID and that does not work well with supporting multiple destinations in one method call. Use the new ‘add_destination()’ method instead. (issue #2766)

  • The new simplified format of the automatically generated ‘Name’ property of owned listener destinations causes existing destinations with the old format to be ignored and a Python warning of type ‘pywbem.OldNameDestinationWarning’ will be issued. Such owned destination instances need to be either removed as owned destinations with a prior version of pywbem, or as permanent destinations with this version of pywbem. (issue #2766)

Bug fixes:

  • Fixes bug in compiler where log of ModifyClass request failure was not surrounded by verbose test (if p.parse.verbose:). See pywbemcli issue #395,

  • Fixes issue where mock add_namespace() fails to correctly add the namespace after a namespace provider has been installed. (see #2865)

  • Fixes several issues in WBEMSubscriptionManager:

    • Fixed the discrepancy between documentation and code in add_filter() regarding ‘filter_id’, ‘name’ and ownership type: The only allowed combinations are now owned filters with ‘filter_id’ and permanent filters with ‘name’. (issue #2757)

    • add_filter() and add_destinations() methods can no longer modify existing instances on the WBEM server. They can only create new instances.

    • Modified the algorithm to determine owned filters and instances so they are are correctly recovered from the WBEM server when the WBEMSubscriptionManager is restarted (before this they could be returned as not-owned object).

    • Change to use WBEM server systemname as the value of the SystemName property.

    • Removed code that built instance path for new filter and destination instances since that was used only to try to determine if instance existed to make the create/modify decision.

    • Added the client host as a component of the Name property for owned filters and destinations. (issue #2701).

    • Fix issue where windows indication throughput is very slow. It is in the range of 1 indication every 2 seconds. The issue is not pywbem but windows itself apparently because of hosts file and DNS configuration such that using localhost builds in a delay. This can be fixed by using an IP address for the indication listener or modifying the hosts table in windows. For this test we chose to just change the host name See issue #528)

    • Fixes issue with SubscriptionManager class where add_destinations loses the input parameter owned if there are multiple urls in the listener_urls parameter (see issue #2715)

    • Fixes issue where add_subscription returned wrong instance if the instance already exists. (See issue #2719)

    • Fix issues in SubscriptionManager.add_destination to add optional parameter which populates the destination PersistenceType property. (See issue #2712)

    • Add capability to mock subscription providers to execute ModifyInstance (See issue #2722)

    • Fixed pywbem_mock and the MOF_compiler to test for creation or compile of an instance with a creation class that has the Abstract qualifier. This will fail since abstract classes cannot be instantiated. (see issue #2742)

    • Removed use of unittest.Mock in pywbem_mock.FakedWBEMConnection to use mock versions of _imethodcall and _methodcall and simply duck typed the methods. (see issue #2755)

    • Fixed issue in pywbem SubscriptionManager where duplicate add_destination() resulted in good return rather than CIMError. The code where the Name property is different but the URL the same was modified to test for both URL and persistence type equality before returning the existing instance. (See issue $ 2782)

  • Fixes MOF compiler issue where the compiler was allowing array properties to have corresponding instances instantiated with non-array values and vice-versa. This now causes a parse error. (See issue # 2786)

  • Docs: Fixed an error with the autodocsumm and Sphinx 4.0.0. (issue #2697)

  • Jupyter Notebook: Ignored safety issues 40380..40386 in order to continue supporting it with Python 2.7. (issue #2703)

  • Windows: Removed dependency on bash command in pip upgrade in Makefile. (issue #2713)

  • WBEM listener: Fixed the incorrect Content-Type header value ‘text/html’ that was set in its export responses by changing that to ‘text/xml’. (part of issue #2729)

  • WBEM listener: Removed the incorrect check for the Accept-Encoding header value when processing export requests to be consistent with DSP0200 which requires that WBEM listeners must support any value. (part of issue #2729)

  • Fixed installation with setup.py on ubuntu for Python 2.7, 3.4, 3.5, by pinning yamlloader to <1.0.0. (issue #2745)

  • Mitigated Pylint issue ‘deprecated-method’ when using time.perf_counter() on Python versions 3.6 and 3.7. (issue #2768)

  • Mitigated new Pylint error ‘not-an-iterable’ when using ‘WBEMServer’ properties that return lists and use deferred initialization. (issue #2770)

  • Security - Added 42218 42253 42254 42297 42298 42203 to safety ignore list. These were new safety issues 1 Nov 2021. The modules are all in development, and Jupyter notebook.

  • Fix incompatibility between Sphinx 1.8.5 (version for python <= 3.5) and docutils 0.18. (See issue # 2787).

  • Modified dev-requirements and rtd-requirements to require Sphinx >= 3.54.

  • Modify dev-requirements.txt to limit version of more-itertools to < 8.10.1 for python < 3.6. See issue #2796

  • Fixed new issues raised by Pylint 2.12.1.

  • Fixed error when installing virtualenv in install test on Python 2.7.


  • Improved the running of indication listeners via WBEMListener.start():

    • The method will now raise a new exception pywbem.ListenerPortError when the port is in use, instead of the previous socket.error on Python 2 and OSError on Python 3 that had confusing or unspecific error messages.

    • The method will now raise a new exception pywbem.ListenerCertificateError when using HTTPS and there is an issue with the server certificate file, private key file, or invalid password for the private key file, instead of the previous ssl.SSLError or OSError that had confusing or unspecific error messages.

    • The method will now raise a new exception pywbem.ListenerPromptError when using HTTPS and the prompt for the password of the private key file was interrupted or ended, instead of the previous IOError or OSError that had unspecific error messages.

    • If the private key file is protected with a password, the password prompt now states the path name of the private key file in the prompt message.

    • Add optional initialization parameter url to pywbem_mock FakedWBEMConnection class. This allows a different URL than the default http://FakedWBEMConnection:5988. With this, tests can be executed with multiple simultaneous mock environments pywbem. (See issue #2711)

  • Test: Added support for validating the structure of user-defined properties in the easy-server server and vault files. As part of that, increased the minimum version of the ‘pytest-easy-server’ package to 0.8.0. (issue #2660)

  • Added providers to the pywbem_mock environment for the 3 classes required to manage subscriptions in a WBEM server. (See issue #2704)

  • Finalized the support for SI units that was experimental so far, i.e. the ‘pywbem.siunit()’ and ‘pywbem.siunit_obj()’ functions. (issue #2653)

  • Modify ‘SubscriptionManager.add_filter()’ to use the CIM_IndicationFilter property ‘SourceNamespaces’ in place of the deprecated ‘SourceNamespace’. (see issue #2725 and the Incompatible changes: section above)

  • Added support for the ExportIndication export operation by extending ‘WBEMConnection’ to be able of targeting a WBEM listener instead of a WBEM server, and by adding an ‘ExportIndication()’ method to ‘WBEMConnection’. The ‘default_namespace’ and ‘use_pull_operations’ init parameters and properties are ignored when targeting a WBEM listener. (issue #2729)

  • Test: Improved diff display when assertion in test_recorder.py fails.

  • Added toleration support for WBEM servers that return a CIM status CIM_ERR_FAILED when pywbem issues a pull operation and the server does not support it. Note that DSP0200 requires the use of CIM status CIM_ERR_NOT_SUPPORTED in this case, but at least one WBEM server returns CIM_ERR_FAILED. (issue #2736)

  • Added a ‘copy()’ method to ‘WBEMConnection’, ‘FakedWBEMConnection’, ‘LogOperationRecorder’, and ‘TestClientRecorder’. The ‘copy()’ method returns a copy of the object where user-specified attributes are copied and any additional internal state is reset. In case of ‘FakedWBEMConnection’, the repository and registries of the original object are reused by the new object. (issue #2750)

  • The init methods of ‘WBEMConnection’ and ‘LogOperationRecorder’ now copy any mutable input arguments in order to ensure the new object is decoupled from the user-provided objects. (related to issue #2750)

  • Changed the WBEMConnection.timeout property to be settable. This allows adjusting the timeout after the connection has been created. (issue #2752)

  • Pylint: Removed pinning of Pylint to <2.7.0 because the performance issue can also be addressed by disabling the similarity checker, and addressed Pylint issues reported by Pylint 2.9. (issue #2672)

  • Simplified the format of the automatically generated ‘Name’ property of owned indication filters from: "pywbemfilter:" {ownership} ":" {client_host} ":" {submgr_id} ":" {filter_id} ":" {guid} to: "pywbemfilter:" {submgr_id} ":" {filter_id}. The client host was removed in order to allow different client systems to be used. The ownership was removed because filters with an auto-generated Name are always owned. The GUID was removed to make the name predictable and the uniqueness it attempted to guarantee is now achieved by rejecting the creation of filters with the same name. Overall, this change makes the name much more suitable for use in CLI tools such as pywbemcli. (issue #2765)

  • Added a ToleratedSchemaIssueWarning class with its base class Warning. The new ToleratedSchemaIssueWarning is expected to be used where the MOF compiler or code detects issues in the CIM Schema that are either tolerated or corrected.

  • Added a ‘pywbem.WBEMSubscriptionManager.add_destination()’ method that makes the way the ‘Name’ property is created for listener destination intances consistent with how that is now done for indication filters: There is a new parameter ‘name’ that directly sets the ‘Name’ property for permanent destinations, and a new parameter ‘destination_id’ that is used for creating the ‘Name’ property for owned destinations. The format of the generated ‘Name’ property has been changed from: "pywbemdestination:" {ownership} ":" {client_host} ":" {submgr_id} ":" {guid} to: "pywbemdestination:" {submgr_id} ":" {destination_id}. The client host was removed in order to allow different client systems to be used. The ownership was removed because destinations with an auto-generated Name are always owned. The GUID was removed to make the name predictable and the uniqueness it attempted to guarantee is now achieved by rejecting the creation of destinations with the same name. Overall, this change makes the name much more suitable for use in CLI tools such as pywbemcli. (issue #2766)

  • Fixed install error of PyYAML 6.0b1 on Python 2.7 during installtest, by pinning it to <6.0.

  • Fixed install error of wrapt 1.13.0 on Python 2.7 on Windows due to lack of MS Visual C++ 9.0 on GitHub Actions, by pinning it to <1.13.

  • Fixed install error of yanked jsonschema 4.0.0 on Python <3.7, by excluding it.

  • Enhanced test matrix on GitHub Actions to always include Python 2.7 and Python 3.4 on Ubuntu, and Python 2.7 and Python 3.5 on macOS and Windows.

  • Support for Python 3.10: Added Python 3.10 in GitHub Actions tests, and in package metadata.


  • Extend tests for SubscriptionManager to utilize pytest and cover error cases.

13.7. pywbem 1.2.0

This version contains all fixes up to pywbem 1.1.3.

Released: 2021-04-26

Incompatible changes:

  • Unsupported CIM infrastructure versions returned in CIM-XML responses from WBEM servers are now raised as a new exception pywbem.CIMVersionError, and were previously raised as pywbem.CIMXMLParseError. Unsupported DTD versions and CIM-XML protocol versions returned in CIM-XML responses from WBEM servers are now raised as new exceptions pywbem.DTDVersionError and pywbem.ProtocolVersionError, and were previously ignored by pywbem. Since these new exceptions are derived from pywbem.VersionError which is derived from pywbem.VersionError, this change is only incompatible if such unsupported versions were specifically handled by users.

  • The pywbem.WBEMServer.get_selected_profiles() method now raises pywbem.ModelError instead of KeyError when required properties were found to be missing. This is an incompatible change for users that catch this exception. (related to issue #2580).

  • The operation recorder support added in pywbem 0.9 as an experimental feature was changed to become internal. As part of this, the “WBEM operation recording” section has been removed from the documentation, the operation recorder specific classes are no longer documented, and the operation recorder specific attributes and methods of the ‘WBEMConnection’ class have been declared to be internal and have been removed from the documentation. The logging support which uses the operation recorder remains publicly available. If you are using the operation recorder, please create an issue in the issue tracker describing how you use it.

Bug fixes:

  • MOF compiler: Fixed bug where MOF compiler did not correctly install a CIM schema in a non-default namespace because it tried to get the qualifiers from the default namespace. (see issue #2502)

  • Test: Changed dependency to ‘typed-ast’ to match the needs of ‘astroid’ and to install it only on CPython. This allows re-enabling PyPy3 on Travis.

  • Test: Pinned psutil to <=5.6.3 on PyPy2+3 to avoid an installation error.

  • Test: Increased the minimum version of ‘pyzmq’ on Python 3.9 to 19.0.0 to avoid an installation error.

  • Test: Circumvented unicode issue with lxml.etree.fromstring()/XML() on Python 3.9 by passing in binary strings.

  • Test: Adjusted _format()/_ascii2() testcases to PyPy3 behavior with binary vs unicode results.

  • Test: Suppressed pylint warning about ‘tracemalloc’ methods on PyPy.

  • Test: Disabled leaktest in travis also on PyPy3 (in addition to PyPy2).

  • Test: Disabled ‘make resourcetest’ in Travis on Pypy2+3, and suppressed Pylint issues about using ‘tracemalloc’ methods and disabled its unit tests.

  • Fixed the bug that pywbem allowed reference typed CIMQualifier and CIMQualifierDeclaration objects. DSP0004 disallows reference types on qualifiers and qualifier declarations. This fix now causes CIM-XML responses received from a WBEM server with reference typed qualifier values and qualifier declarations to raise pywbem.CIMXMLParseError from WBEMConnection operations.

  • Fixed a DeprecationWarning issued by urllib3 about using the whitelist_methods parameter of Retry.

  • Security: Increased minimum version of ‘PyYAML’ to 5.2 on Python 3.4 and to 5.3.1 on Python 2.7 and >=3.5 to address security issues reported by safety. The relevant functions of ‘PyYAML’ are not used by pywbem, though.

  • Security: Increased minimum version of ‘urllib3’ to 1.24.2 on Python 3.4 and to 1.25.9 on Python 2.7 and >=3.5 to address security issues reported by safety. To support these versions of ‘urllib3’, increased minimum version of ‘requests’ to 2.20.1 on Python 3.4 and to 2.22.0 on Python 2.7 and >=3.5.

  • Security: Increased minimum versions of several packages that are needed only for test or development of pywbem to address security issues reported by safety: requests-toolbelt to 0.8.0; lxml to 4.6.2 (except for Python 3.4); pylint to 2.5.2 and astroid to 2.4.0 on Python >=3.5; typed-ast to 1.3.2 on Python 3.4; twine to 3.0.0 on Python >=3.6; pkginfo to 1.4.2; bleach to 3.1.2 on Python 3.4 and to 3.1.4 on Python 2.7 and Python >=3.5.

  • Fixed issue on GitHub Actions with macos by no longer running “brew update” in pywbem_os_setup.sh. (issue #2544)

  • Docs: Fixed incorrect attribute name ‘provider_classnames’ in method provider example. (issue #2564)

  • Mitigated the coveralls HTTP status 422 by pinning coveralls-python to <3.0.0.

  • Test: Add tests to test_mof_compiler to test for errors where the namespace name component of the namespace pragma is missing.

  • In CIMNamespaceProvider.post_register_setup(), fixed an AttributeError when accessing the ‘Name’ property of a CIM instance (related to issue #2580).

  • In the MOFCompiler class, fixed that if a MOF instance already exists, the ModifyInstance operation failed because the instance path was not specified. The fix is to construct the instance path from the key properties in instance specified in MOF. That fix has the limitation that it does not account for instance providers that add key properties or that ignore provided key properties (e.g. InstanceID). (issue #2586)

  • Corrected issue in pywbem_mock where DeleteQualifier() was not checking whether the qualifier was used in any classes in the namespace before being deleted. (see #2585)

  • Fixed an incorrect calculation of the min/max values for the server response time in the statistics support of pywbem (issue #2599)

  • Security - Add safety issue 40072 (lxml version 4.6,3) to safety ignore list. No change to pywbem since we apparently do not use the affected component (see issue #2645)

  • Test: Pinned decorator package to python <=5.0.0 on Python 2+3.4 because decorator 5.0.0 does not support python < 3.5 (see issue #2647)

  • Fix pywem_mock issue with Delete class not calling providers to handle the DeleteInstance (see issue #2643)

  • Test: Workaround for BadStatusLine issue in test_WBEMListener_send_indications test function. This is not a fix for the root cause of the issue. For details, see pywbem issue #2659.

  • Fixed installation of ‘pywinpty’ package on Python 2.7 by pinning it to <1.0. It failed because it does not declare its supported Python versions. (see issue #2680)

  • Fixed that the test workflow ignored errors that occurred during ‘make install’ and ‘make develop’, by splitting the multiple commands in these steps into separate steps.


  • Finalized the pywbem mock support. (issue #2651)

  • Logging: Added a value ‘off’ for the log destination in the pywbem.configure_logging() function that disables logging. (part of issue #86)

  • Improved exception handling during the parsing of CIM-XML responses received from a WBEM server. Exceptions that were raised as TypeError or ValueError during the creation of CIM objects that are part of the operation result, are now raised as pywbem.CIMXMLParseError. Note that this is not an incompatible change because users were already potentially getting pywbem.CIMXMLParseError exceptions in other cases. (see issue #2512)

  • Test: Added CIM-XML testcases in the area of instance paths. (see issue #2514)

  • Docs: Clarified that pywbem.type_from_name() returns CIMInstanceName for type name “reference”, even though for use in CIM method parameters, CIMClassName is also valid.

  • Issued a new pywbem.MissingKeybindingsWarning warning if a CIMInstanceName object that does not have any keybindings gets converted to CIM-XML by calling its tocimxml() method, or gets converted to a WBEM URI by calling its to_wbem_uri() method, or gets parsed from CIM-XML via an INSTANCENAME element without keybindings. This is motivated by the fact that DSP0004 does not allow instance paths without keys (section 8.2.5). (See issue #2514)

  • Reduced memory consumption of CIM objects and CIM types by defining their attributes to use Python slots. (see issue #2509)

  • Reduced memory consumption of CIM objects by using lazy initialization of dictionary-type attributes. This resulted in significant savings when the attribute is typically unused, for example in CIMInstance.qualifiers. (see issue #2511)

  • Added Python 3.9 to the supported Python versions and added tests for it on Travis.

  • Added a check for the DTDVERSION attribute value in CIM-XML responses from WBEM servers to start with ‘2.’. A different version of the CIM-XML DTD standard DSP0203 was never published, so this is not expected to be an incompatible change.

  • Unsupported versions for CIM infrastructure, DTD or protocol version returned in CIM-XML responses from WBEM servers are now raised as new exceptions pywbem.CIMVersionError, pywbem.DTDVersionError, and pywbem.ProtocolVersionError, respectively. These new exceptions are derived from the existing exception pywbem.VersionError. Previously, unsupported CIM infrastructure versions were raised as pywbem.CIMXMLParseError, and unsupported DTD or protocol versions were ignored by pywbem.

  • Removed the pinning of Pylint to 2.5.2 on Python >=3.5. Disabled the following warnings that were newly reported by the latest version (2.6.0) of Pylint: ‘signature-differs’ because it does not recognize compatible signature changes; ‘raise-missing-from’ and ‘super-with-arguments’ because these issues cannot reasonably be addressed as long as Python 2.7 is supported.

  • In the makefile, added an ignore list for issues reported by safety along with the reasons why each issue is ignored. This allowed enforcing that the safety command reports no issues.

  • Migrated from Travis and Appveyor to GitHub Actions. This required several changes in package dependencies for development.

  • Docs: Added examples to the pywbem.siunit() and pywbem.siunit_obj() functions.

  • Extend the MOF compiler so that the pywbem_mock can compile MOF containing the namespace pragma that defines a namespace other than the one defined in the compile_mof_string() or compile_mof_file() methods namespace parameter if the namespace exists. Extend documentation on use of the namespace parameter to reflect the behavior if the MOF contains a namespace pragma. Since the code gives precedence to tha pragma over the namespace specified in in the namespace parameter, the documentation reflects this. (see issue #2256 partial fix).

  • The pywbem.siunit() function supported the PUnit format as defined in DSP0004. It turned out that the CIM Schema used PUnit qualifiers with a slightly extended format where the numeric modifiers were the middle instead of just at the end. Extened the PUnit format supported by the siunit() function accordingly. (issue #2574)

  • Improved and fixed the messages in the compile log of class MOFCompiler and ensured that the target namespace of the compiled objects is included in the messages and added messages for changes to the target namespace caused by ‘pragma namespace’ directives.

  • The ‘mof_compiler’ script now displays the compiled objects and their target namespace when specifying verbose mode (-v option).

  • Improvements in pywbem_mock.CIMNamespaceProvider and pywbem.WBEMServer to more cleanly handle Interop namespaces (related to issue #2580).

  • Improvements in the log messages of the MOFCompiler class. (related to issue #2586)

  • Added a close() method to pywbem.WBEMConnection that closes the underlying session of the ‘requests’ package. This avoids the ResourceWarning ‘unclosed socket’ that the ‘requests’ package issued so far when the Python process terminates. Added the ability for pywbem.WBEMConnection to be used as a context manager, that closes the connection at the end. (see issue #2591)

  • Added a mechanism to suspend the statistics counting of server time if one or more operations do not return the server response time, in order to prevent incorrect interpretations of the counters when only a subset of the operations returned server response time. (issue #2603)

  • Added validation tests to pywbem_mock ModifyClass to limit classes that can be modified (no subclasses, and no instances exist, and correct superclass) (see issue #2447)

  • Docs: Used ‘autodocsumm’ Sphinx extension for generating attribute and method summary tables for classes in the documentation. Moved documentation of some base classes into a new ‘Base Classes’ section in the appendix.

  • Added a conn_close() method to the pywbem.MOFCompiler class that closes the underlying connection. Used that function in the ‘mof_compiler’ script to remove a ResourceWarning about unclosed sockets. (issue #2610)

  • Added ‘make perftest’ to run performance tests. At this point, the performance tests measure the sending of indications to the pywbem.WBEMListener.

  • Test: Added support for end2end testing of WBEM servers based on server and vault files of the ‘easy-server’ Python package. The server files can specify WBEM servers and their expected supported functions. WBEM servers can be somewhere in the network or can be containers on DockerHub which are automatically pulled and started. At this point, the OpenPegasus container on DockerHub is used and the end2end tests are run in the GitHub Actions test workflow on Ubuntu (Docker is not available in GHithub Actions on Windows or MacOS).


  • Test: Fixed all remaining ResourceWarnings during test. (issue #86)

  • Test: Cleaned up DeprecationWarning for the propagation of key property values introduced in pywbem 1.1.0. (see issue #2498)

  • Add index section to generated documentation.

  • Fixed new issues reported by pylint 2.7.0. At the same time, needed to temporarily pin pylint to <2.7.0 and astroid to <2.5.0 due to massive elongation of the run time of pylint in the pywbem project.

  • Added tests for pywbem_mock ModifyClass request operation to test the validation exceptions and correctness of modified class. (see issue #2210)

  • Cleaned up TODOs noted in pywbem and pywbem_mock to fix any that were actually bugs, etc. and either create issues or mark the others as FUTURE with more explanation. (See issue #2491)

  • Enforced that the pywbem source code does not contain any TODOs (pylint fixme). Note that the pywbem test code may still contain TODOs.

  • Removed remove_duplicate_setuptools.py script since the project is no longer using Travis.

Known issues:

  • On Python 3.4, the urllib3 package is pinned to <1.25.8 because 1.25.9 removed Python 3.4 support. As a consequence, safety issue 38834 cannot be addressed on Python 3.4.

13.8. pywbem 1.1.0

This version contains all fixes up to pywbem 1.0.3.

Released: 2020-10-05


  • Deprecated the propagation of key property value changes to corresponding path keybindings in CIMInstance objects. A DeprecationWarning is now issued in that case. A future release of pywbem will remove the propagation. If you change key property values of a CIMInstance object that has a path set and depend on the corresponding keybinding values in the path to also change, then you should now change these keybindings values in your code instead of relying on the automatic propagation.

    Reasons for this deprecation are:

    • There are valid scenarios to have the keybindings different from the key properties, for example when passing an instance to the ModifyInstance operation that attempts to modify the key property values of an instance.

    • A propagation in the opposite direction was missing, so the approach did not ensure consistency of the CIMInstance object anyway.

    • Propagating the update of a key property value to the path is a hidden side effect and complicates an otherwise simple operation.

Bug fixes:

  • Fixed erronously raised HeaderParseError when WBEM server returns Content-type: text/xml. This content-type is valid according to DSP0200. Added testcases. (See issue #2420)

  • Fixed handling of ReturnQueryResultClass=True in WBEMConnection.OpenQueryInstances(). (See issue #2412)

  • Mock: In the mock support, fixed multiple errors in the mocked OpenQueryInstances(), and added testcases for it. (See issue #2412)

  • Test: Fixed dependency issues with ‘pyrsistent’ package on Python 2.7 and Python 3.4.

  • Increased minimum versions of nocasedict to 1.0.0 and nocaselist to 1.0.2 to pick up fixes needed for pywbem.

  • Windows install: Upgraded WinOpenSSL to 1.1.1h.

  • Upgraded the minimum versions of nocasedict to 1.0.3 and of nocaselist to 1.0.1, to pick up fixes in these packages.

  • Test: Fixed ResourceWarning that was issued due to not closing a MOF compiler log file used during tests. (see issue #2487)


  • Mock: Added load() methods to the ProviderRegistry and InMemoryRepository classes, in support of caching mock environments. They replace the data of the target object with the data from a second object. That is needed for restoring these objects from a serialization, because multiple other objects have references to these objects which requires that the object state can be set without having to create a new object.

  • Mock: Added an iteritems() method to the ProviderRegistry class that iterates through the flattened list of providers, represented as tuples.

  • Mock: Added support for more ways the output parameters can be returned in method providers: The container for the output parameters can now also be a Mapping (including pywbem’s internal NocaseDict or nocasedict.NocaseDict), in addition to just the built-in dict. The values in such a Mapping container can now also be CIMParameter objects, in addition to just the CIM data values. This provides consistency with the way the input parameters of the method provider are represented. (See issue #2415)

  • Added time statistics support to pywbem_mock, that allows measuring which parts of the setup and execution of a mock environment takes how much time. (Part of issue #2365)

  • Added a new method is_subclass() to WBEMConnection that checks whether a class is a subclass of a class. Both classes can be specified as classnames or as CIMClass objects.

  • Added support for translating the values of PUnit and Units qualifiers into human readable SI conformant unit strings, via new functions pywbem.siunit_obj() and pywbem.siunit(). These new functions are marked as experimental. (See issue #2423)

  • Mock: Added a new property provider_dependent_registry to FakedWBEMConnection which is a registry of provider dependent files. This registry can be used by callers to register and look up the path names of additional files in context of a mock script. This ability is used by the pywbemtools project to validate whether its mock cache is up to date w.r.t. these files.

  • Test: The testcases using the simplified_test_function decorator now verify that no warnings are issued. Previously, not expecting warnings in a testcase caused warnings that occurred to be tolerated. Adjusted some code in pywbem and in testcases to accomodate that. Fixed the ResourceWarning in validate.py.

  • Test: When testing with latest package levels, the package versions of indirect dependencies are now also upgraded to the latest compatible version from Pypi. (see issue #2485)


  • Mock: Cleaned up the output of repr(BaseProvider) to no longer show the CIM repository, and to include the other attributes that were not shown so far. (See issue #2432)

  • Complete pywbem_mock tests that were documented as missing in issue. (see issue # 2327)

  • Removed dependency on package custom-inherit and removed package from pywbem. (see issue # 2436)

  • Test: Changed collection of .yaml files in function tests to address DeprecationWarning issued by pytest (see issue #2430).

  • Fix issue where pywbem_mock would accept a CreateClass where the qualifier scopes did not match the corresponding QualifierDeclarations (See issue #2451)

  • Fixed issue where pywbem_mock CreateClass was not testing for class dependencies (reference classes and EmbeddedObject classes). (see issue #2455)

  • Fixed issue where compiler would fail of a EmbeddedObject qualifier defined Null (None) as the embedded object class.

  • Fixed issue where mof compiler asserts if the creation of new class fails because of reference or embedded object depency failures. Changed to a MOFDependencyError exception (see issue # 2458)

  • Added test with mocker to demonstrate that a ModifiedInstance with key property modified results in PARAMETER_ERROR. (see issue #2449)

  • Complete test of embedded instances. (see issue #464)

13.9. pywbem 1.0.0

Released: 2020-08-08


  • Improved logging in WBEM listener and its test module.

13.10. pywbem 1.0.0b4

Released: 2020-08-02

Incompatible changes:

  • Removed the following classes that were providing support for UNIX Domain Socket based connections:

    • PegasusUDSConnection

    • SFCBUDSConnection

    • OpenWBEMUDSConnection

    They are no longer supported since moving to the ‘requests’ package.

  • Updated the change history of 1.0.0b1 to mention one more incompatible change where support was removed for specifying multiple directory paths or file paths from the ca_certs parameter of WBEMConnection. Now, only a single directory path or file path can be specified, or None.

  • The use of NocaseDict from the nocasedict package caused the CIM objects that have a dictionary interface (i.e. CIMInstance and CIMInstanceName), and all CIM object attributes that are dictionaries (e.g. CIMInstance.properties) to now behave consistent with the built-in dict class. This causes the following incompatibilities:

    • The update() method now supports only a single (optional) positional argument. Previously, multiple positional arguments were supported.

    • The iterkeys(), itervalues(), and iteritems() methods are no longer available on Python 3. Use the keys(), values(), or items() methods instead.

    • The keys(), values(), and items() methods now return a dictionary view instead of a list. That no longer allows modifying the dictionary while iterating over it. Create a list from the result of these methods and iterate over the list, if you have to delete dictionary items while iterating.

    • CIM object attributes that are dictionaries can no longer be set to None (which previously caused the dictionary to be empty). Set such attributes to an empty iterable instead, to get an empty dictionary.

    • Changed the exception that is raised when CIM object attributes are set with an unnamed key (None) from TypeError to ValueError.

  • The dictionary view objects that are now returned on Python 3 by CIMInstance.values() and CIMInstance.items() can no longer be used to iterate over when the underlying properties dictionary is modified in the loop. The returned dictionary view raises RuntimeError if the dictionary is modified while iterating, so that case is properly detected. Put list() around the calls to these methods if you need to modify the underlying properties dictionary in the loop. (See issue #2391)


  • Deprecated the iterkeys(), itervalues() and iteritems() methods of CIMInstance and CIMInstanceName on Python 3, to be more consistent with the built-in dict class that does not support these methods on Python 3. Use the keys(), values() or items() methods instead. (See issue #2372)

Bug fixes:

  • Test: Fixed issue with Swig when installing M2Crypto on native Windows in the Appveyor CI, reporting mssing files swig.swg and python.swg. This was fixed by pinning the swig version to 4.0.1 in pywbem_os_setup.bat. This fix only applies to pywbem versions before 1.0.0, but is needed in 1.0.0 as well, because e.g. pywbemtools pulls the fixed pywbem_os_setup.bat file from the master branch of pywbem (one of the recommended approaches, and the only one with a stable URL) (See issue #2359).

  • Docs: Fixed the description of return values of the keys(), values() and items() methods of CIMInstanceName to state that they return lists on Python 2, but dictionary views on Python 3. (See issue #2373)

  • Install: Increased the minimum version of six to 1.14.0 (it was 1.12.0 on Python 3.8 and 1.10.0 below Python 3.8). (See issue #2379)

  • Test: Added libffi-devel as an OS-level package on CygWin, it is needed by the Python cffi package which recently started to be needed. (See issue #2394)


  • Test: Enabled coveralls to run on all Python versions in the Travis CI, resulting in a combined coverage for all Python versions.


  • Changed the order of inheriting from mixin classes to put them after the main base class, following Python standards for inheritance (issue #2363).

  • Docs: Switched to using the sphinx_rtd_scheme for the HTML docs (See issue #2367).

  • Replaced pywbem’s own NocaseDict with NocaseDict from the nocasedict package and adjusted code and testcases where needed. See also the ‘Incompatible changes’ section. (See issue #2356)

  • Improved the values() and items() methods of CIMInstance on Python 3 to return a dictionary view object instead of a list, to improve performance and for consistency with Python 3 behavior of the built-in dictionary. The keys() method already returned a dictionary view object on Python 3. The value item in each iteration is the same as before this change, i.e. the CIMProperty.value attribute. (See issue #2391)

13.11. pywbem 1.0.0b3

Released: 2020-07-15

Incompatible changes:

  • Removed the deprecated compile_dmtf_schema() method in FakedWBEMConnection in favor of a new method compile_schema_classes() that does not automatically download the DMTF schema classes as a search path, but leaves the control over where the search path schema comes from, to the user. (See issue #2284)

    To migrate your existing use of compile_dmtf_schema() to the new approach, the code would be something like:

    schema = DMTFCIMSchema(...)
    conn.compile_schema_classes(class_names, schema.schema_pragma_file, namespace)
  • Removed the deprecated schema_mof_file property in DMTFCIMSchema, in favor of the schema_pragma_file property. (See issue #2284)

  • Changed the handling of invalid types of input parameters to WBEMConnection operation methods to raise TypeError instead of other exceptions (KeyError, AttributeError, CIMError). This does not change the behavior if valid types are passed. (See issue #2313)

  • Mock support: Changed the interface of user-defined providers in order to simplify their implementation. (See issue #2326)

Bug fixes:

  • Test: On Python 3.8, upgraded the minimum version of lxml from 4.4.1 to 4.4.3, in order to fix an XMLSyntaxError raised when encountering UCS-4 characters. (See issue #2337)


  • Test: Added support for testing from Pypi/GitHub source distribution archives. This allows testing without having to check out the entire repository, and is convenient for testing e.g. when packaging pywbem into OS-level packages. See new section ‘Testing from the source archives on Pypi or GitHub’ for details. (See issue #2260)

  • Test: Renamed the ‘end2end’ target in the makefile to ‘end2endtest’. (Part of issue #2260)

  • Added type checking for input parameters to WBEMConnection operation methods. Previously, invalid types could cause various exceptions to be raised, including KeyError, AttributeError, or CIMError. Now, all invalid types are properly checked and cause TypeError to be raised. Added testcases for invalid types. (See issue #2313)

  • Mock support: Simplified the user-defined providers by checking their input parameters and the related CIM repository objects as much as possible before calling the providers. Updated the provider documentation to be from a perspective of the provider, and clarified what is already verified when the provider is called. This resulted in some incompatible changes at the interface of user-defined providers. (See issue #2326)

  • Reworked the documentation about the mock WBEM server, specifically the sections about user-defined providers (See issue #2290).

  • Enhance MOF compiler to correctly process MOF that contains instance definitions with properties that have EmbeddedObject or EmbeddedInstance qualifiers. In this case, the property value is defined in the MOF as a string or array of strings that compiles to a CIMInstance. This change does not compile CIMClass definitions. Originally these compiled objects were passed through the compiler as strings. (See issue # 2277).

  • Mock support: Added a method BaseProvider.is_subclass() that tests whether two CIM classes in the CIM repository have an inheritance relationship. Used the new method for checking the class of embedded instances against the class specified in the EmbeddedInstance qualifier. (Related to issue #2326)


  • Document the TODOs in pywbem_mock and tests/unittest/pywbem_mock.test_wbemconnection.py and create an issue to document these issues (issue #2327) except for the ones we fixed in place or removed because they are obsolete. (See issue #1240)

  • Corrected issue in the Jupyter notebook pywbemmock to reflect the incompatible changes for pywbem mock including 1) the change of the method compile_dmtf_schema to compile_dmtf_classes, and the replacement of the InvokeMethod callback mechanism to define a method provider with the user-defined method provider. (see issue #2310)

13.12. pywbem 1.0.0b2

Released: 2020-06-29

This version contains all fixes up to 0.17.3.

Bug fixes:

  • Change log: Reintegrated the original change log sections for 0.14.1 to 0.17.2 and removed the matching change log entries from the change log section for 1.0.0b1. This reduces the change log entries shown for 1.0.0b1 to just the changes relative to 0.17.2. (See issue #2303)

  • Fixed slow performance for EnumerateClasses operation in mock WBEM server. (See issue #2314)

  • Updated change history of 1.0.0b1 to add a bug fix for accomodating the newly released flake8 version 3.8.1 by removing the pinning of pyflakes to <2.2.0, and adjusting the source code of pywbem to get around the new flake8 messages E123, E124, E402.


  • Added support for array-typed elements to pywbem.ValueMapping. (See issue #2304)

13.13. pywbem 1.0.0b1

Released: 2020-06-24

This is a beta version of the upcoming version 1.0.0. Pip will only install this version if explicitly requested, e.g. using any of these commands:

$ pip install pywbem==1.0.0b1
$ pip install --pre pywbem

Incompatible changes:

Because pywbem 1.0.0 is a major change, a number of significant incompatibilites have been incorporated. The following subsections summarize these changes and provide details of the changes themselves and the reasons for the changes.

Summary of incompatible changes:

The details, alternatives, and reasons for these incompatible changes is shown below this list.

  • Removed Python 2.6 support.

  • Migrated pywbem to use the ‘requests’ Python package for HTTP/HTTPS pywbem client to WBEM server communication. This caused some restrictions, see the detailed decription of incompatible changes, below.

  • Removed the following deprecated functionality:

    • WBEMConnection verify_callback init parameter.

    • WBEMConnection **extra keyword arguments from operation methods.

    • Ordering for NocaseDict, CIMInstanceName, CIMInstance and CIMClass objects.

    • WBEMConnection properties: url, creds, x509, ca-certs, no_verification, and timeout setter methods. They are now read-only

    • WBEMConnection method_call() and imethod_call()` methods.

    • WBEMConnection operation_recorder property.

    • CIMInstance property property_list and the same-named init parameter.

    • pywbem.tocimxml() support for value of None.

    • CIMInstance.tomof() indent parameter.

    • pywbem.byname() internal function.

    • pywbem.tocimobj() function.

    • wbemcli command.

  • Made the MOFWBEMConnection class (support for the MOF compiler) internal.

  • Changed exceptions behavior:

    • MOF compilation methods of MOFCompiler and FakedWBEMConnection raises exceptions based on class pywbem.MOFCompileError.

    • Some methods of ValueMapping to use pywbem.ModelError.

    • Some methods of WBEMServer to raise the new exception pywbem.ModelError.

    • WBEMConnection request method responses added a new exception pywbem.HeaderParseError derived from pywbem.ParseError.

  • Made all sub-namespaces within the pywbem namespace private, except for ‘pywbem.config’.

  • Mock WBEM Server (experimental):

    • Replaced the add_method_callback() method in FakedWBEMConnection with user-defined providers.

    • Removed the conn_lite init parameter and mode of FakedWBEMConnection.

    • Changed the logging behavior of the MOF compilation methods of FakedWBEMConnection so that the default is for the caller to display exceptions rather than the MOF compiler logger.

    • Changed the default behavior to ignore IncludeQualifiers and IncludeClassOrigin parameters for GetInstance and EnumerateInstances operations of the mock WBEM server.

Incompatible change details:

  • Removed Python 2.6 support. The Python Software Foundation stopped supporting Python 2.6 in October 2013. Since then, many Python packages have continued releasing versions for Python 2.6, including pywbem. In 2017 and 2018, a number of Python packages have removed support for Python 2.6 and it has become an increasingly difficult task for pywbem to keep supporting Python 2.6. For this reason, Python 2.6 support has been removed from pywbem in its 1.0.0 version. This allowed eliminating a lot of Python version dependent code, eliminating the dependency to the unittest2 package, and lifting a number of restrictions in test code.

  • Migrated pywbem to use the ‘requests’ Python package for all HTTP/HTTPS communication between the pywbem client and the WBEM server replacing httplib and different ssl implementations for python 2 and 3. This eliminates several python 2/3 pywbem differences and simplifies the installation and setup of pywbem.

    This results in the following changes:

    • Changed the behavior of the default value None for the ca_certs parameter of WBEMConnection: Previously, it caused the first existing directory from a predefined set of directories to be used as the certificate directory. Now, it causes the certificates provided by the ‘certifi’ Python package to be used. That package provides the Mozilla Included CA Certificate List.

    • Removed support for specifying multiple directory paths or file paths from the ca_certs parameter of WBEMConnection. Now, only a single directory path or file path can be specified, or None (see previous item).

    • A non-existing path specified for the ca_certs parameter of WBEMConnection now raises IOError. Previously, the directory or file was simply skipped (and subsequently, verification failed).

    • Removed support for the ‘OWLocal’ authentication scheme that was supported for the OpenWBEM server, and the ‘Local’ authentication scheme that was supported for the OpenPegasus server. Pywbem now supports only the ‘Basic’ authentication scheme.

    • Removed support for communicating with WBEM servers using UNIX domain sockets by specifying a file-based URL. Use the standard http and https protocols instead.

    • The installation of pywbem no longer uses the pywbem_os_setup.sh/.bat scripts because there are no more prerequisite OS-level packages needed for installing pywbem. If you have automated the pywbem installation, this step should be removed from your automation.

    • Removal of the WBEMConnection verify_callback method.

  • Removed the verify_callback parameter of WBEMConnection. It was deprecated in pywbem 0.9.0, and was not supported in Python 3. The ‘requests’ package provides the commonly accepted certificate verification within the package itself. (See issue #1928)

  • Removed the **extra keyword arguments from WBEMConnection operation methods. Such arguments were passed on to the WBEM server, but they are not needed because all parameters defined by the CIM-XML protocol are supported as named arguments to these methods. This would only be incompatible if a WBEM server supports non-standard parameters or keyword variables were misnamed which would have been ignored and not used but now results in exceptions. (See issue #1415)

  • Removed the deprecated support for ordering NocaseDict, CIMInstanceName, CIMInstance and CIMClass objects. The ordering of such dictionaries was never supported with pywbem on Python 3, and for Python 2 it had been deprecated since pywbem 0.12.0. The user should do any required ordering. (See issue #1926).

  • Removed the deprecated ability to set the following properties of class WBEMConnection: url, creds, x509, ca-certs, no_verification, and timeout. These properties should not be set after the connection is defined as the results on the connection are unpreditable.

  • Removed the deprecated methods method_call() and imethod_call()` and the deprecated property operation_recorder from class WBEMConnection. Users should always use the request methods (ex. GetInstance).

  • Removed the deprecated property property_list and the same-named init parameter from class CIMInstance. The behavior of this parameter was undefined and incomplete.

  • Removed the deprecated ability to support a value of None for pywbem.tocimxml().

  • Removed the deprecated indent parameter of CIMInstance.tomof().

  • Removed the deprecated internal function pywbem.byname().

  • Removed the deprecated function pywbem.tocimobj(). The replacement for this method is to use the function cimvalue().

  • Removed the wbemcli command that was deprecated in pywbem 0.15.0. The recommended replacement is the pywbemcli command from the ‘pywbemtools’ package on Pypi: https://pypi.org/project/pywbemtools/. Some of the reasons for the removal are: (See issue #1932)

    • Wbemcli did not have a command line mode (i.e. a non-interactive mode), but pywbemcli does.

    • The interactive mode of wbemcli was more of a programming environment than an interactive CLI, and that makes it harder to use than necessary. Pywbemcli has an interactive mode that uses the same commands as in the command line mode. If you need an interactive programming prompt e.g. for demonstrating the pywbem API, use the interactive mode of the python command, or Python’s IDLE.

    • Pywbemcli provides more functionality than wbemcli, e.g. server commands, persistent connections, class find, instance count, or multiple output formats.

  • Made the MOFWBEMConnection class internal and removed it from the pywbem documentation. It has an inconsistent semantics and should not be used by users. (See issue #2001).

  • Exception changes:

    • Changed the type of exceptions that are raised by methods of pywbem.ValueMapping for cases where the value-mapped CIM element has issues, as follows:

      • From TypeError to pywbem.ModelError, if the value-mapped CIM element is not integer-typed.

      • From ValueError to pywbem.ModelError, if an item of the ValueMap qualifier is not an integer.

      The exceptions occur only with model definitions that are invalid and do not occur in the CIM Schema published by DMTF.

      This change is incompatible only for users that handle these exceptions specifically in their code. (See issue #1429)

    • Changed the exception behavior of the MOF compilation methods of the MOFCompiler and FakedWBEMConnection classes to no longer raise CIMError, but to raise the following exceptions derived from a new base class MOFCompileError:

      • MOFParseError MOF parsing errors. This class already existed and was already used for this purpose.

      • MOFDependencyError: New class for MOF dependency errors (e.g. superclass not found).

      • MOFRepositoryError: New class for errors returned from the target CIM repository. The CIMError exception raised by the CIM repository is attached to that exception in its attribute cim_error.

      If you are using these MOF compilation methods, please change your catch of exceptions accordingly. (See issue #1235)

    • Changed the CIMError exceptions that were raised by pywbem code in several WBEMServer methods to now raise ModelError, for cases where the model implemented by the server has issues. (See issue #1423)

    • Added a new exception pywbem.HeaderParseError derived from pywbem.ParseError that is used to report HTTP header issues in the CIM-XML response. Previously, HTTPError had been used for that purpose, misusing its integer-typed status attribute for the message string. This is actually a bug fix, but because it changes the exception type, it is also an incompatible change for users that handle exceptions specifically. (See issue 2110)

  • Made all sub-namespaces within the pywbem namespace private, except for pywbem.config. Specifically, renamed the following modules by prepending an underscore character: cim_constants.py, cim_http.py, cim_obj.py, cim_operations.py, cim_types.py, cim_xml.py, exceptions.py, mof_compiler.py, moflextab.py, mofparsetab.py, tupleparse.py, tupletree.py. Using these sub-namespaces had been deprecated in pywbem 0.8.0.

    This change is compatible for users that followed the recommendation to import only the symbols from the pywbem namespace. Users that imported symbols from these sub-namespace should now import them from the pywbem namespace. If you miss a symbol in the pywbem namespace, it was likely a symbol that is not part of the public pywbem API. (See issue #1925)

  • Mock WBEM Server (experimental):

    • Removed the add_method_callback() method and the methods property from the FakedWBEMConnection class. This has been replaced by the user-defined provider concept where the user defines and registers a subclass to the class MethodProvider which implements the InvokeMethod responder in that user-defined provider. The ‘mock WBEM server’ section of the documentation and module documentation for the MethodProvider and InstanceWriteProvider document creation of unser-defined providers (See issue #2062).

    • Removed the conn_lite init parameter and mode of operation of FakedWBEMConnection. The lite mode turned out too simplistic for mock testing and of no real value, while adding complexity. Users must include classes and qualifier declarations. Most mock environments start with classes and qualifier declarations in any case and the tools to add them are simple. (See issue #1959)

    • Changed the logging behavior of the MOF compilation methods FakedWBEMConnection.compile_mof_string() and compile_mof_file() (consistent with the new compile_schema_classes() method) to be able to do no logging, by specifying None for the log_func init parameter of MOFCompiler. This is now the default.

      MOF compile errors no are longer printed to stdout by default. To continue printing the MOF compile errors to stdout, print the exception in your code. (See issue #1997)

    • Changed the behavior for the IncludeQualifiers and IncludeClassOrigin parameters on the GetInstance and EnumerateInstances operations of the mock WBEM server. The default is now to ignore the provided parameters and never include either attribute in the returned instances whereas, in previous versions the provided parameters determined whether they were returned. This behavior may be changed back to how it was in previous versions by modifying config variables in the new ‘pywbem_mock.config’ module. Reason for the change was that the behavior of these parameters was inconsistent between versions of DSP0200 and the new behavior implements the recommended default behavior. (See issue #2065)


  • Deprecated Python 2.7 and 3.4 support in pywbem, that are both beyond their End-Of-Life date.

  • Deprecated the compile_dmtf_schema() method in FakedWBEMConnection in favor of a new method compile_schema_classes() that does not automatically download the DMTF schema classes as a search path, but leaves the control over where the search path schema comes from, to the user.

  • Deprecated the schema_mof_file property in DMTFCIMSchema in favor of a new property schema_pragma_file since this is the file that contains all of the MOF pragmas defining the locations of the class MOF files in a set of directories.

Bug fixes:

  • Docs: Fixed issues in Listener and SubscriptionManager examples (See issue #1768)

  • Test: Added testcases to the cim_xml module, and migrated from unittest to pytest.

  • Fixed a standards compliance issue. DSP0201/203 version 2.4 introduced the requirement to set the TYPE attribute on KEYVALUE elements. In operation requests sent to the WBEM server, pywbem now sets the TYPE attribute of the KEYVALUE element for keybinding values that are specified as CIM data types (e.g. pywbem.Uint8, string, bool). For keybinding values that are specified as Python int/float types or as None, pywbem continues not to set the TYPE attribute on KEYVALUE elements. This is sufficient to be fully standards compliant because it is always possible for a user to cause the TYPE attribute to be set. In operation responses received from the WBEM server, pywbem continues to tolerate an absent TYPE attribute, in order to accomodate WBEM servers that implement DSP0201/203 before version 2.4. (See issue #2052)

  • Documented the limitation that the CORRELATOR element introduced in DSP0201/203 version 2.4 is not supported by pywbem. (related to issue #2053)

  • Test: Fixed a bug introduced in 0.14.5 where the manualtest scripts failed with invalid relative import. (see issue #2039)

  • Test: Fixed incorrect coverage reported at the end of the pytest run, by increasing the minimum version of the coverage package to 4.5.2. (See pywbemtools issue #547)

  • Added missing attributes to the test client recorder (class TestClientRecorder) (see issue #2118).

  • Fixed issue where DMTFCIMSchema/build_schema_mof creates the new cim_schema pragma list in order different than the DMTF defined file. In some rare cases this could cause an issue because the DMTF carefully ordered the class pragmas to avoid and issues of dependencies, etc. Note that if only leaf classes are use there should never be an issue. (See issue # 2223)

  • Fixed issue in MOF compiler where compile_string() modifies the default_namespace of the MOF_Compiler handle parameter which is some subclass of WBEMConnection. This impacts at least the pywbem_mock environment since compiling MOF into a namespace that is not the connection default_namespace changes the default_namespace to that defined for the compile_string. This required extending all subclasses of MOFCompiler.BaseRepository to handle an optional namespace parameter on CreateClass, ModifyClass, GetClass, CreateInstance, etc. methods including the implementation in pywbem_mock. (See issue #2247)

  • Removed the incorrect statement about deprecated comparison operators in the NocaseDict class - these operators had already returned errors.

  • Accomodated the newly released flake8 version 3.8.1 by removing the pinning of pyflakes to <2.2.0, and adjusting the source code of pywbem to get around the new flake8 messages E123, E124, E402.


  • For the end2end tests, extended the definitions in tests/profiles/profiles.yml by the ability to specify the profile version. (See issue #1554)

  • Improved test coverage of function tests by verifying the last_request, last_raw_request, last_reply, and last_raw_reply attributes of a connection.

  • Migrated the communication between the pywbem client and WBEM servers to to use the ‘requests’ Python package. This greatly cleaned up the code, made the code common again between Python 2 and Python 3, and removed any prerequisite OS-level packages, thus simplifying the installation of pywbem again to what is expected for a pure Python package.

  • Added more unit tests for the cim_http.py module and converted it to pytest. (See issue #1414)

  • Added a request_data attribute to the HTTPError and CIMError exceptions and a response_data attribute to the HTTPError exception for storing the CIM-XML request or response, respectively, in order to provide additional context for the error. The ParseError exception and its subclasses already had request_data and response_data attributes. (See issue #1423)

  • Added proxy support to the WBEMConnection class, by adding a proxies init parameter and attribute, utilizing the proxy support of the requests package. (see issue #2040)

  • Add property to pywbem_mock FakedWBEMConnection to allow the user to modify the mocker behavior to forbid the use of the pull operations. (See issue #2126)

  • Refactor pywbem_mock into more consistent components separating the mock repository from the component that represents a CIMOM. (see issue # 2062)

  • Refactor pywbem_mock to separate the CIM repository from the class FakedWBEMConnection. This creates a new file _cimrepository.py that implements a CIM server repository. (See issue #2062)

  • Enhance FakedWBEMConnection to allow user-defined providers for specific WBEM request operations. This allows user-defined providers for selected instance requests (CreateInstance, ModifyInstance, DeleteInstance) and for the InvokeMethod. Includes the capability to register these providers with a method register_provider in FakedWBEMConnection. This also creates a CIM_Namespace provider to handle the CIM_Namespace class in the interop namespace. See issue #2062)

  • Changed format ‘standard’ of CIMInstanceName.to_wbem_uri() to sort the keys in the resulting WBEM URI. (See issue #2264)

  • Added a new method FakedWBEMConnection.compile_schema_classes() that does not automatically download the DMTF schema classes as a search path, but leaves the control over where the search path schema comes from, to the user. See the Deprecations section.


  • Improved performance when setting WBEMConnection.debug by prettifying the request and reply XML only when actually accessed. (See issue #1572)

  • Removed pywbem_mock conn_lite mode. (See issue # 1959)

  • Fixed an error in the CIM-XML creation where the IMETHODRESPONSE element did not support output parameters. The IMETHODRESPONSE element is not used in the pywbem client, though.

  • Fixed an error in the CIM-XML creation where the IRETURNVALUE element did not support multiple return objects. The IRETURNVALUE element is not used in the pywbem client, though.

  • Fixed issue where the MOF compiler was using an instance path defined when the compiler built the instance as the instance alias instead of the instance path returned by the CreateInstance method. The issue is that the instance path defined in the compiler may not be complete and the only correct instance path is the path returned by the CreateInstance. Mof compiler alias now build with return from CreateInstance and the creation of the path has been moved from the compiler instanceDeclaration to the CreateInstance method defined in the compiler repo. For the tests that means that the path creation is in MOFWBEMConnection.CreateInstance. (See issue # 1911)

  • Test: Converted WBEMListener tests from unittest to pytest. (See issue #2179)

13.14. pywbem 0.17.2

Released: 2020-04-19

Bug fixes:

  • Test: Fixed virtualenv related failures during install test. (See issue #2174)

  • Dev: Increased the versions of the base packages ‘pip’, ‘setuptools’ and ‘wheel’ to the content of Ubuntu 18.04 as a minimum, and to the lowest versions that support a particular Python versions beyond that. This only affects development of pywbem. (See issue #2174)

  • Setup: Added the scripts for installing OS-level dependencies (pywbem_os_setup.sh/.bat) to the source distribution archive. Note that starting with the upcoming pywbem 1.0.0, these scripts are no longer needed, so this change will not be rolled forward into 1.0.0. (See issue #2173)

  • Increased the version of ‘PyYAML’ from 5.1 to 5.3 on Python 2.7, to pick up a fix for dealing with Unicode characters above U+FFFF in narrow Python builds. This could not be fixed for Python 2.6 since PyYAML 3.12 dropped support for Python 2.6 (See issue #2182)

  • Fixed raise error for invalid reference_direction in WBEMServer.get_central_instances(). (See issue #2187)

  • Fixed raise error for missing ports in WBEMListener.__init__(). (See issue #2188)

13.15. pywbem 0.17.1

Released: 2020-04-13

Bug fixes:

  • Fixed version incompatibilities reported by pip for tox/pluggy, ipython/prompt-toolkit, and flake8/pyflakes. (See issue #2153)

  • Fixed the issue where formatting the timezone name of a pywbem.MinutesFromUTC object raised NotImplementedError, by adding a tzname() method. (see issue #2160)

  • Pinned mock to <4.0.0 on Python <3.6 due to an install issue when installing from the source tarball. (See issue #2150).

  • Enabled installation using ‘setup.py install’ from unpacked source distribution archive, and added install tests for various installation methods including this one. (See issue #2150).

  • Increased minimum version of ‘six’ from 0.10.0 to 0.12.0 when on Python 3.8 (or higher). (See issue #2150).

  • Increased minimum version of ‘setuptools’ on Python 3.7 from 33.1.1 to 38.4.1 to fix a bug with new format of .pyc files. (See issue #2167).

13.16. pywbem 0.17.0

Released: 2020-04-03

Bug fixes:

  • Test: Fixed a bug introduced in 0.14.5 where the manualtest scripts failed with invalid relative import. (see issue #2039)

  • Dev: Fixed installation of Jupyter Notebook on Python 3.4 by defining the appropriate minimum versions of the ipython package, per Python version. (See issue #2135)

  • Pinned dparse to <0.5.0 on Python 2.7 due to an issue. (See issue #2139)


  • Changed the HTTPS support of pywbem.WBEMListener from using the deprecated ssl.wrap_socket() function to using the ssl.SSLContext class that was introduced in Python 2.7.9. This causes more secure SSL settings to be used. On Python versions before 2.7.9, pywbem will continue to use the deprecated ssl.wrap_socket() function. (See issue #2002)


  • Renamed all sub-modules within the pywbem namespace so they are now private (i.e. with a leading underscore). This has been done for consistency with the upcoming 1.0.0 version of pywbem, for eaier rollback of changes from that version. For compatibility to users of pywbem who use these sub-modules directly, despite the recommendation to import only the symbols from the pywbem namespace, these sub-modules are still available under their previous names. (See issue #1925)

13.17. pywbem 0.16.0

This version contains all fixes up to pywbem 0.15.0.

Released: 2020-01-09

Bug fixes:

  • Silenced the MOFCompiler class for verbose=False. So far, it still printed messages for generating the YACC parser table, causing one test to fail, and others to issue useless prints. (Issue #2004)

  • Test: Fixed an error in testing the PLY table version in testcases that caused the LEX/YACC parser table files to be written to the pywbem installation when using TEST_INSTALLED. (Related to issue #2004)

  • Fixed that the MOFCompiler could be created with handle=None to work against a local repository. It was documented that way, but failed with AttributeError. (See issue #1998)

  • Fixed the error that the MOF compilation of a class could fail but the error was not surfaced. This only happened when the MOF compiler was invoked against a WBEM server, when the class already existed, and when the ModifyClass operation that was attempted in this case, failed.

  • Fixed that the CIM-XML payload in log entries was spread over multiple lines. The payload is now escaped as a single-line Python string.

  • Test: Fixed an error in test_format_random() for the backslash character. (See issue #2027)

  • Fixed handling of Unicode string in ca_certs parm of WBEMConnection on py2 (See issue #2033)


  • Test: Removed the dependency on unittest2 for Python 2.7 and higher. (See issue #2003)


  • For Python 2.7 and higher, replaced the yamlordereddictloader package with yamlloader, as it was deprecated. For Python 2.6, still using yamlordereddictloader. (See issue #2008)

13.18. pywbem 0.15.0

This version contains all fixes up to pywbem 0.14.6.

Released: 2019-12-01


  • The wbemcli command has been deprecated. Pywbem 1.0.0 will remove the wbemcli command. The recommended replacement is the pywbemcli command from the pywbemtools package on Pypi: https://pypi.org/project/pywbemtools/. Some of the reasons for the intended removal are: (See issue #1932)

    • Wbemcli does not have a command line mode (i.e. a non-interactive mode), but pywbemcli does.

    • The interactive mode of wbemcli is more of a programming environment than an interactive CLI, and that makes it harder to use than necessary. Pywbemcli has an interactive mode that uses the same commands as in the command line mode. If you need an interactive programming prompt e.g. for demonstrating the pywbem API, use the interactive mode of the python command, or Python’s IDLE.

    • Pywbemcli provides more functionality than wbemcli, e.g. server commands, persistent connections, class find, instance count, or multiple output formats.

Bug fixes:

  • Fixed that the embedded_object attribute was not copied in CIMProperty.copy().

  • Fixed that inconsistent names (between key and object name) were not detected when setting CIMMethod.parameters from an input dictionary.

  • Docs: Fixed errors in description of CIMInstance.update_existing().

  • Added dependency to pywin32 package for Windows, and pinned it to version 225 to work around an issue in its version 226. (See issue ##1946)

  • Modified pywbem_mock to create the instance path of new instances created by the compiler. Previously, the mocker generated an exception if the path for a compiler created new instance was not set by the compiler using the instance alias. That requirement has been removed so the mock repository will attempt to create the path (which is required for the mock repository) from properties provided in the new instance. If any key properties of the class are not in the instance it will generate an exception. This is backward compatible since the mocker will accept paths created by the compiler. The incompatibility is that the mocker tests for the existance of all key properties. (see issue # 1958)

  • Circumvented removal of Python 2.7 in Appveyor’s CygWin installation by manually installing the python2 CygWin package. (See issue #1949)

  • Fixed issue with MOFCompiler class where mof_compiler script was not writing the new classes and instances to the remote repository defined with the -s parameter. (see issue #1956 )

  • Fixed issue with mof_compiler and mof rollback where instances were not removed when rollback was executed. This was caused by MOFWBEMConnection code that did not put correct paths on the instances when they were inserted into the local repository so the rollback delete of the instances could not identify the instances. (see issue #1158)

  • Fixed several install issues with the lxml, flake8, pywin32, pip, setuptools, and wheel packages on Python 3.8 on Windows. (See issues #1975, #1980).


  • Removed the use of the ‘pbr’ package because it caused too many undesirable side effects. As part of that, removed PKG-FILE and setup.cfg and went back to a simple setup.py file. (See issues #1875, #1245, #1408, #1410)

  • Code: Fixed pywbem_mock issue where CreateInstance was not handling the case sensitivity of property cases if the instance property name case was different than the class property name case. While not legally incorrect the created instance looks bad. See issue #1883

  • Code: Fixed pywbem_mock issue where ModifyInstance not handling case sensitivity of property cases if the instance property name case was different than the class property name case. Modify failed if the case of property names did not match. Fixed the case test error and put the class defined proerty name into the modified instance. See issue #1887

  • Fix issue in mof compiler where mof instance that duplicates existing instance path can get lost with no warning. NOTE: This does not happen in the standalone compiler because it creates a duplicate instance issue # 1852 but depending on the implementation of ModifyInstance for the compiler, it can simply lose the instance. See issue #1894

  • Fix issue in pywbem_mock where instances with duplicate paths defined in mof and put into the mocker repository were originally accepted as separate instances but fixed to cause an exception in issue #1852, conform to the DMTF spec definition that requires that the second instance modify the first. Fix issue in the mof_compiler where the CreateInstance retry logic was first doing a ModifyInstance and if that failed then trying a DeleteInstance and CreateInstance. We removed the DeleteInstance/CreateInstance logic and insured that an exception would occur if the ModifyInstance failed. See issue #1890

  • Code: Fix issue with pywbem_mock that allows duplicate instances to be inserted into the mock repository when mof instances are compiled. Duplicate instances (CIMInstanceName) will now cause an exception. See issue #1852

  • Added support for byte string values in keybindings of CIMInstanceName method to_wbem_uri(), consistent with other methods.

  • Test: Added Python 3.8 to the tested environments. (See issue #1879)

  • Clarified that namespace and host will be ignored when the ResultClass and AssocClass parameters of association operations are specified using a CIMClassName object. (See issue #1907)

  • Added capability to log calls to WBEM server from mof_compile script. AAdds an option to the cmd line options to enable logging.

  • Added SSL related issues to the Troubleshooting section in the Appendix of the docs, and added the OpenSSL version to the pywbem.ConnectionError exceptions raised due to SSL errors for better diagnosis. (See issues #1950 and #1966)

  • Added ‘twine check’ when uploading a version to Pypi, in order to get the README file checked before uploading.


  • Removed unnecessary code from cim_obj._scalar_value_tomof() that processed native Python types int, long, float. These types cannot occur in this function, so no tests could be written that test that code.

13.19. pywbem 0.14.6

Released: 2019-10-10

Bug fixes:

  • Fixed case sensitive class name check in mock support of ModifyInstance (See issue #1859)

  • Test: Fixed args of WBEMOperation methods in mock unit tests & function tests.


  • Test: Enabled Python warning suppression for PendingDeprecationWarning and ResourceWarning (py3 only), and fixed incorrect make variable for that. (See issue #1720)

  • Test: Removed pinning of testfixtures to <6.0.0 for Python 2.7/3.x due to deprecation issue announced for Python 3.8, and increased its minimum version from 4.3.3 to 6.9.0.

  • Test: Increased minimum version of pytest from 3.3.0 to 4.3.1 because it fixed an issue that surfaced with pywbem minimum package levels on Python 3.7.

  • Increased minimum version of PyYAML from 3.13 to 5.1 due to deprecation issue announced for Python 3.8.

13.20. pywbem 0.14.5

Released: 2019-09-29

Bug fixes:

  • Added test to tests/manual/cim_operations.py specifically to test the iter and pull operations for the IncludeQualifier and LocalOnly parameters based on issue #1780.

  • Dev/Test: Pinned lxml to <4.4.0 because that version removed Python 3.4 support.

  • Dev/Test: Pinned pytest to <5.0.0 for Python < 3.5 because that version requires Python >= 3.5.

  • Test: Fixed errors on Python 2.6 about unnamed format replacements.

  • Fixed incorrect format specifiers in exceptions raised in pywbem_mock. (See issue #1817)

  • Fixed missing support for the ANY scope in pywbem_mock. (See issue #1820)

  • Increased version of WinOpenSSL used on Windows from 1.1.0k to 1.1.0L.

  • Fixed that the OpenEnumerateInstances() method of WBEMConnections incorrectly supported a LocalOnly parameter, that was never supported as per DSP0200. Specifying that parameter as True or False on this method caused properly implemented WBEM servers to reject the operation. That parameter now still exist on this operation but is ignored and is not passed on to WBEM servers. The corresponding Iter…() method now also ignores that parameter if the pull operations are used; it is still passed on if the traditional operations are used. (See issue #1780)

  • Fixed the issue that EnumerateInstances did not return instances without properties unless DeepInheritance was set (see issue #1802).

  • Fixed bad formatting on –mock-server option in wbemcli.py.

  • Fixed the issue with ‘dnf makecache fast’ during pywbem_os_setup.sh on Fedora (See issue #1844)


  • Improved handling of missing WinOpenSSL on Windows by recommending manual download of next version.

  • Test: Added support for running the pywbem tests against an installed version of pywbem, ignoring the version of pywbem that exists in the respective directories of the repo work directory. This is useful for testing a version of pywbem that has been installed as an OS-level package. (See issue #1803)

  • Docs: Improved the section about installing to a native Windows environment (See issue #1804)

  • Improved error messages and error handling in wbemcli and in the pywbem mock support.

13.21. pywbem 0.14.4

Released: 2019-07-20

Bug fixes:

  • Test: For Python 2.6 on Travis, pinned the distro version to Ubuntu trusty (14.04) because the default distro version on Travis changed to xenial (16.04) which no longer has Python 2.6.

  • Add Jupyter tutorial for pywbem_mock to table of notebooks in documentation.

  • Fix issue with Python 3 and WBEMconnection certificate handling. pywbem was getting AttributeError: ‘SSLContext’ object has no attribute ‘load_cert’ because incorrect method called. (See issue # 1769)

  • Fixed that the WBEMConnection.Open…() operations incorrectly supported an IncludeQualifiers parameter, that was never supported as per DSP0200. Specifying that parameter as True on these operations caused properly implemented WBEM servers to reject the operation. The parameter is now ignored on these operations. Since this parameter was documented as deprecated in DSP0200 and documented that users could not rely on qualifiers to be returned, this fix should not break user code. The WBEMConnection.Iter…() operations now also ignore that parameter if the pull operations are used, and the documentation has been updated accordingly. (See issue #1780)

  • pywbem_mock display_repository() comment defintion that surrounds comments in the output was defined as # but mof comments are // so changed. (see issue #1951)

  • Fixed that local tests (i.e. TEST_INSTALLED=False) skipped MOF tests if the mofparsetab or moflextab files did not exist. (See issue #1933)


  • Docs: Clarified how the pywbem_os_setup.sh/bat scripts can be downloaded using a predictable URL, for automated downloads.

  • Clarified the ‘x509’ parameter of ‘WBEMConnection’ in that its ‘key_file’ item is optional and if omitted, both the private key and the certificate must be in the file referenced by the ‘cert_file’ item. Added checks for the ‘x509’ parameter.


  • Test: Removed pinning of distro version on Travis to Ubuntu xenial (16.04) for Python 3.7, because that is now the default distro version, in order to pick up a future increase of the default distro version automatically.

13.22. pywbem 0.14.3

Released: 2019-05-30

Bug fixes:

  • Windows install: Upgraded version of Win32/64OpenSSL.exe that is downloaded during installation on native Windows, from 1.1.0j to 1.1.0k. This became necessary because the maintainer of the Win32OpenSSL project at https://slproweb.com/products/Win32OpenSSL.html removes the previous version from the web site whenever a new version is released, causing the pywbem installation to fail during invocation of pywbem_os_setup.bat on Windows. Related to that, fixed the way pywbem_os_setup.bat recognizes that the version does not exist. (see issue #1754)


  • Docs: Updated the trouble shooting section with an entry that explains how a user can resolve the installation failure that is caused on Windows when the Win32OpenSSL project at https://slproweb.com/products/Win32OpenSSL.html removes the previous version from their web site when a new version is released.

  • Increased versions of the following packages to address security vulnerabilities:

    • requests from 2.19.1 to 2.20.1 (when on Python 2.7 or higher)

    • urllib3 from 1.22 to 1.23

    • bleach from 2.1.0 to 2.1.4

    These packages are only used for development of pywbem.

    Note that requests 2.19.1 has a security issue that is fixed in 2.20.0. However, requests 2.20.0 has dropped support for Python 2.6.

13.23. pywbem 0.14.2

Released: 2019-05-08

Bug fixes:

  • Test: Temporary fix for pytest option –pythonwarnings in end2end tests (issue #1714).

  • Test: Fixed AttributeError in end2end assertion functions (Issue #1714)

  • Test: Added and fixed profile definitions for end2end tests. (Issue #1714)

  • Fix issue in the Jupyter notebook iterablecimoperations where the IterQueryInstance example did not correctly processthe return from the operation. It attempted to itereate the returned object and should have been iterating the generator property in that object. Documentation of that example and the example were corrected. (see issue #1741)

  • Fix issue in pywbem_mock/_wbemconnection_mock.py with EnumerateInstances that includes a property list with a property name that differs in case from the property name in the returned instance. Works in the conn_lite=True mode but fails in conn_lite=False mode because the test was case insensitive.

  • Test: Fixed Appveyor CI setup for UNIX-like environments under Windows (Issue #1729)


  • Changed GetCentralInstances methodology in WBEMServer.get_central_instances() to be bypassed by default, because (1) WBEM servers do not implement it at this point, and (2) there are WBEM servers that do not behave gracefully when unknown CIM methods are invoked. Because WBEM servers are required to implement one of the other methodologies, this change is not incompatible for pywbem users.

  • Improved the performance for receiving large CIM-XML responses in the tupleparser by moving type checks for text content in XML into an error handling path, and by replacing some isinstance() calls with type() comparison.

  • Improved the quality of the information in TypeError exceptions that are raised due to invalid types passed in WBEMConnection operation arguments. (Issue #1736)

13.24. pywbem 0.14.1

Released: 2019-04-05

Bug fixes:

  • Change history: Removed incorrect statement about commenting out server-specific functionality from the tuple parser from the change history of pywbem 0.14.0.

13.25. pywbem 0.14.0

This version contains all fixes up to pywbem 0.13.1.

Released: 2019-04-03

Bug fixes:

  • Extend makefile clobber to remove cover files from pywbem_mock package.

  • Fixed pip version issue on Appveyor.

  • Fixed AttributeError on __offset in CIMDateTime.repr(). See issue #1681.

  • Removed the associationDeclaration and IndicationDeclaration mof parser production rules from mof_compiler.py because: a) They were orderd in p_mp_createClass so that the classDeclaration production was always used, b) When reordered, they still created a YACC reduce/reduce conflict where the result was that YACC used the classDeclaration production to resolve the conflict, c) they represent exactly the same syntax as the classDeclaration. In effect, these production rules were never really used executed.


  • Significant performance improvements in the CIM-XML parser, resulting in about 50% elapsed time savings for 10000 returned CIM instances, compared to pywbem 0.13.0. See issue #1630.

  • Added the possibility to specify a value of False for the embedded_object attribute/parameter of CIMProperty and CIMParameter. It is stored as None. The only difference to specifying None is that the embedded_object value is not inferred from the property or parameter value in that case, so this saves performance.

  • Added the ‘python_requires’ keyword to the package definition, which makes pip aware of the supported Python versions.

  • Refactored and extended Jupyter notebook for pywbem_mock.

13.26. pywbem 0.13.0

Released: 2019-02-23

This version contains all fixes up to pywbem 0.12.6.

Incompatible changes:

  • Changed the path argument of CIMInstance to be deep copied, because it may be modified by setting properties. It was previously shallow copied (and incorrectly documented as not being copied). This is only incompatible if user code relies on the init method modifying the keybindings of its path input argument. If user code relies on that, it is highly recommended that you decouple such dependencies (Issue #1251).

  • Changed the path argument of CIMClass to be shallow copied, in order to decouple the created object from its input arguments. It was previously not copied but referenced. This is only incompatible if user code relies on the init method modifying the provided path input argument. If user code relies on that, it is highly recommended that you decouple such dependencies (Issue #1251).

  • Changed keybinding processing when creating CINInstanceName objects to disallow NULL keybinding values. This is in accord with the CIM standard DSP0004. This is only incompatible if user code relies on the non-standard behavior of creating a keybinding having None as a value. If your code relies on that non-standard behavior, it can be re-established by via the config property IGNORE_NULL_KEY_VALUE in config.py. Note that NULL keybindings may be an issue with some WBEM servers. (Issue #1298)

  • The fix for issue #1302 removed the pywbem config variables from the pywbem namespace. They are now only available via the pywbem.config namespace. However, this change should not affect you because the previously documented approach for changing them through the pywbem namespace did not work, so if you changed the config variables successfully, you have done that through the pywbem.config namespace already, and this change does not affect you.

  • Removed the ez_setup.py script from the repository. That script is the well-known tool that bootstraps easy_setup which was used for installing Python packages in times before pip became ubiquitous. If anyone still uses easy_setup these days for installing Python packages, it is time to switch to using pip. If you cannot do that for some reason, you will now need to install easy_setup by some other means.

  • Changed CIMError exceptions raised to indicate incorrect CIM-XML responses to open/pull operations, to raise ParseError instead, consistent with other response checking (Issue #1320).


  • Added announcement that Python 2.6 support in pywbem will be removed in its future 1.0.0 version.

  • Deprecated the tocimobj() function because it has some inconsistencies, in favor of the cimvalue() function introduced in pywbem 0.12.0. Changed all internal uses of tocimobj() to cimvalue(). (Issue #904).

  • The deprecated internal methods imethodcall() and methodcall() of the WBEMConnection class will be removed in the next pywbem version after 0.13.

  • Removed the deprecation for setting the default_namespace attribute of WBEMConnection that had been introduced in pywbem 0.12; setting it is now fully supported again.


  • Finalized the use_pull_operations property and init argument of the WBEMConnections class that allows controlling whether the Iter…() methods use pull operations or traditional operations.

  • Finalized the logging support. The logging support was introduced in pywbem 0.11 and was redesigned in pywbem 0.12. For details, see the “WBEM operation logging” section in the pywbem documentation.

Bug fixes:

  • Fixed the issue where wbemcli-help-txt was not being updated when wbemcli.py changed. (Issue #1205)

  • Test: Fixed access to incorrect tuple members in run_cim_operations.py. that were used only in long version of the test. Found by Pylint. (Issue #1206).

  • Fixed that CIMInstanceName.from_wbem_uri() did not support the representation of integer key values in binary, octal or hex format (part of Issue #904).

  • Fixed an issue with running the tests on Travis CI that occurred on Python 2.6 with the latest package level and that was caused by the fact that a new version of the “httpretty” Python package was released that had dropped support for Python 2.6. This was fixed by limiting the version of httpretty to <0.9 when running on Python 2.6. Note that this only affects the development environment.

  • Correct issue in pywbem_mock where we return incorrect CIMError (CIM_ERR_NOT_FOUND rather than CIM_ERR_METHOD_NOT_FOUND) when the class for a method is not defined in the methods repository. issue #1256

  • Fixed issue in pywbem_mock where we were not creating deepcopy (we were using the pywbem .copy that is part of each object (see issue #1251) of objects returned from the repository so that if the objects were modified some of the changes bled back into the repository. Code modified to do deepcopy of everything inserted into the repository through add_cimobjects and the Create… methods and returned from the repository with any of the get/enumerate/etc. methods. We also modified code so that if there is a class repository there is also an instance repository even if it is empty. See issue #1253

  • Fixed issue where pywbem_mock EnumerateClass and EnumerateClassNames parameter losing the ClassName parameter and no test for the ClassName parameter not existing in the repository. (See issue #1271)

  • Correct issue in pywbem_mock where we return incorrect CIMError (CIM_ERR_NOT_FOUND rather than CIM_ERR_METHOD_NOT_FOUND) when the class for a method is not defined in the methods repository. issue #1256

  • Fix issue causing pywbem_mock/_wbemconnection_mock.py display_repository() to display as bytes in Python 3. See issue # 1276

  • Fixed the support for Unicode escape sequences in the MOF compiler. It supported only lower case x1234 but not upper case X1234. Also, it tolerated an invalid x escape sequence, when DSP0004 requires 1..4 hex characters to be present. See issue #1278.

  • Fixed issue where Null key values allowed. See issue #1298

  • Fixed issue with updating pywbem config variables. So far, the pywbem config variables were defined in the pywbem.config namespace and then imported by pywbem into the pywbem namespace. Pywbem documented that these config variables should be accessed (read and written) through the pywbem namespace. However, pywbem code read them in nearly all cases from the pywbem.config namespace. This caused an update that is done by a pywbem user through the pywbem namespace, not to be visible in the pywbem.config namespace, so pywbem did not react to the user’s change. This was fixed by only using the pywbem.config namespace for config variables. They are no longer imported into the pywbem namespace. See issue #1302.

  • Fixed issue where the tomof() methods of CIMProperty, CIMQualifier, and CIMQualifierDeclaration raised IndexError when the value was an empty array. This issue perculated up to higher level CIM objects that are using these objects, i.e. CIMInstance or CIMClass. Added according testcases. See issue #1312.

  • Fix issue in IterQueryInstances where the QueryLanguage and Query parameters were reveresed in the fallback call to ExecQuery method. See issue # 1334.

  • Fixed the issue that the VALUE.OBJECTWITHLOCALPATH element was not allowed as a child element under IRETURNVALUE. This element is used as one possibility for the result of the ExecQuery operation. See issue #1347.

  • Fixed issue in run_cimoperations.py with test for deep inheritance on EnumerateInstances. It was reporting confused result so we created a simpler test. See issue #477.

  • Fixed issues in pywbem_mock where classnames on the operation requests were not treated as case insensitive for some operations, in particular the enumerate operations, reference operations, and associator operations. This also adds a number of tests to validate that classnames. See issue #1355.

  • Fixed the issue that INSTANCE child elements on a returned ERROR element were not allowed. INSTANCE child elements are now allowed and will appear to the user as a list of CIMInstance objects in a new instances property of the CIMError exception that is raised. See issue #1380.

  • Fixed issue in mof_compiler search_paths where doc defined iterable as input but since string is an interable it was allowed but misused. Extended code to specifically allow single string on input. See issue #1227.

  • Increased the minimum required versions of the following dependent Python packages in order to fix security issues with these packages:

    • requests from 2.12.4 to 2.19.1

    • html5lib from 0.9999999 to 0.999999999

    • mistune from 0.7.3 to 0.8.1

  • The ValueMapping class only supported decimal representations of integer values in the ValueMap qualifier. However, DSP0004 allows for decimal, binary, octal and hexadecimal representations of integer values. Added support for all these representations to the ValueMapping class. See issue #1547.

  • Multiple fixes in WBEMServer.get_central_instances():

    • For a profile that implements the central class methodology but has no central instances, the implementation went on to try the scoping class methodology. Now, it accepts that as a valid central instance implementation and returns an empty list of instances, instead. Non-implementation of the central class methodology is not detected from CIM_ERR_NOT_SUPPORTED being returned on the Associators operation that attempts to traverse the CIM_ElementConformsToProfile association.

    • For a profile that implements the scoping class methodology, the traversal from the profile side to the resource side incorrectly assumed that for multi-hop scoping paths, the hops above the first hop could be used as the scoping path of the scoping profile. That has been changed to now omit the scoping path when invoking get_central_instances() on the scoping profile. As a result, the scoping profile is now required to implement the central class methodology.

    • For a profile that implements the scoping class methodology, the traversal from the central instances of the scoping profile down to the central instances of the original profile incorrectly only traversed the first hop of the reversed scoping path. This has been fixed to traverse the entire reversed scoping path.

    • In the recursive invocation of get_central_instances() for the scoping profile, the newly introduced reference direction was not passed on. For now, it is assumed that the scoping profile has the same reference direction as the original profile.

    • Because it seems that with these bugs, the get_central_instances() method cannot have been used reasonably, some ValueError exceptions` it returned to indicate server implementation issues, have been changed to use the newly introduced ModelError exception.

  • For Python 2.6, pinned version of lxml to <4.3.0, because lxml 4.3.0 has removed support for Python 2.6. See issue #1592.

  • Fixed the URL on the DMTF site from which the MOF archive is downloaded. This has changed on the DMTF site and needed to be adjusted.

  • Fixed order of parameters in example method_callback_interface defined in pywbem_mock FakedWBEMConnection. (See issue #1614)

  • Fixed an error “Python : can’t open file ‘C:Usersfirstname’ : No such file or directory” when invoking wbemcli.bat on native Windows in a directory whose path name contained blanks. (See issue #1622)

  • Extend pywbem_mock to correctly handle resolving of classes when they are inserted into the repository. Resolving of classes configures a class inserted with CreateClass or through the mocker add_cimobjects, etc. to reflect the inheritance of properties, methods, etc. from the superclass. The initial release did a very abbreviated resolution which left some characteristics of the new class and did not properly handle things like the override qualifier. (See issue # 1540). This change also simplifies the mocker in that both the compiler and the mock responder methods contribute to the same repository (the original version copied objects from the compiler repository to the mocker repository).

  • Test: Fixed a bytes/unicode error in validate.py that occurred on Python 3 when xmllint failed validating the DTD.

  • Increased the minimum M2Crypto version to 0.31.0 in order to pick up the fix for pywbem issue #1275 (incorrect timeout value).

  • Added the Pyton tox package to the dependencies for development.


  • Extend pywbem MOF compiler to search for dependent classes including:

    1. reference classes (classes defined in reference properties or parameters)

    2. EmbeddedInstance qualifier classes if they are not compiled before the classes that reference them are compiled. Previously the lack of these dependent classes was ignored. The compiler already searches for superclasses if they are not compiled before their subclasses.

    Extends MOFWBEMConnection to generate an exception if the compile of a class with reference parameters or properties reference class is not in the repository or if the class defined for an EmbeddedInstance qualifier is not in the repository.

    This uses the capability in the MOF compiler to search the defined search path for the missing classes if they are not in the repository.

    This means that the mof_compiler can be used to create a complete class repository builds without having to specifically declare all dependent classes for the classes the user needs in a repository if the mof for the dependent classes in in the search path. (Issue #1160).

  • Made CIMInstanceName.from_wbem_uri() and CIMClassName.from_wbem_uri() more flexible w.r.t. tolerating non-standard WBEM URIs that omit the leading colon before class names (part of Issue #904).

  • Added a tobinary() method to the ValueMapping class, which translates the value mapping from a Values string to binary integer values, or a range thereof. This is the opposite direction of the existing tovalues() method. (Issue #1153)

  • Added an items() generator method to the ValueMapping class for iterating through the items of the value mapping, returning tuples of the binary value (or a range thereof), and the Values string. (Issue #1153)

  • Docs: Clarified that the copy() methods of NocaseDict and of the CIM object classes produce middle-deep copies, whereby mutable leaf attributes are not copied and thus are shared between original and copy (Issue #1251).

  • Docs: Added a note to the description of the copy() methods of the CIM objects that states that copy.copy() and copy.deepcopy() can be used to create completely shallow or completely deep copies (Issue #1251).

  • Extend wbemcli to use pywbem_mock with a new command line parameter (–mock_server <mock_info-filename>). Added a set of new tests for this parameter and a MOF file and test code to test the new option. (Issue #1268)

  • Installation on Windows is now more automated by means of a new pywbem_os_setup.bat script. As part of that, the latest M2Crypto version 0.30.1 is now used on Windows, and no longer the somewhat aged versions in the M2CryptoWin32/64 packages. For details, see the installation section in the documentation. That script also downloads and installs Win32 OpenSSL from https://slproweb.com/products/Win32OpenSSL.html.

  • Made exception messages more explicit in the ValueMapping and WBEMServer classes. Issue #1281.

  • Docs: Added a shell command for determining the version of an installed pywbem package, that covers all released pywbem versions (Issue #1246).

  • Docs: Added jupyter notebooks to demonstrate use of pywbem_mock.

  • Make: Eliminated the confusing but unproblematic error message about pbr importing when running certain make targets in a freshly created Python environment. Issue #1288.

  • In MOFCompiler.__init__(), added a type check for the search_paths parameter to avoid accidential passing of a single string. Issue #1292.

  • Add new static method to CIMInstance (from_class) that builds an instance from a class and dictionary of property values. Issue #1188

  • Added support for tolerating a TYPE attribute in the PARAMVALUE element of received CIM-XML responses. The TYPE attribute is not allowed as per DSP0201. However, there are devices that have incorrectly implemented a TYPE attribute instead of the standard PARAMTYPE attribute. The TYPE attribute when present is now used when PARAMTYPE is not present. If both are present, PARAMTYPE is used and TYPE is ignored. Also, test cases were added for tupleparse for the PARAMVALUE element. See issue #1241.

  • Added support for automatically creating the Pragma: UpdateExpiredPassword HTTP header in the CIM-XML request if pywbem detects that the special SFCB method “UpdateExpiredPassword()” is invoked on class “SFCB_Account”. SFCB requires this HTTP header for that method. See https://sblim.sourceforge.net/wiki/index.php/SfcbExpiredPasswordUpdate for details about this SFCB functionality. The automatic creation of the header field is enabled by default and can be disabled with a new pywbem config variable AUTO_GENERATE_SFCB_UEP_HEADER. See issue #1326.

  • Add support for ExecQuery (shortcut eqy) to wbemcli. See issue # 1332.

  • Added support for a new WBEM URI format “canonical” to the to_wbem_uri() methods of CIMInstanceName and CIMClassName. The new format behaves like the existing format “standard”, except that case insensitive components are translated to lower case, and the order of keybindings is the lexical order of the lower-cased key names. The new format guarantees that two instance paths or class paths that are equal according to DSP0004, return equal WBEM URI strings. See issue #1323.

  • Added support for Python 3.7, which was released 2018-06-27.

  • Enhanced the output of the string representation of the CIMError exception by adding the status code name (e.g. the string “CIM_ERR_NOT_SUPPORTED” for status code 7). The string representation is used for example when showing the exception in a Python traceback. See issue #1350.

  • Added checking for the returned instance name to the CreateInstance operation. This changes the exception that is raised from TypeError or IndexError indicating an internal issue, to several pywbem.ParseError exceptions that have reasonable error messages. Note that there is an uncertainty as to whether DSP0200 would allow CreateInstance to not return an instance name. Because this would already have caused an exception to be raised in the current pywbem code, it is assumed that all WBEM server implementations so far always return the instance name, and therefore, pywbem has just improved the quality of the exception that is raised, and continues not to tolerate a missing instance name. Extended the testcases for CreateInstance accordingly. See issue #1319.

  • Added support for CIM namespace creation via a new WBEMServer.create_namespace() method. See issue #29.

  • Added support for CIM namespace deletion via a new WBEMServer.delete_namespace() method. See issue #1356.

  • Added connection information to all pywbem exceptions. This is done via a new optional conn_id keyword argument that was added to all pywbem exception classes. The exception message now has a connection information string at its end. See issue #1155.

  • Added support for passing a WBEMConnection object for the handle parameter of the MOFCompiler creation. This allows a user to pass the WBEM connection directly as a CIM repository, without first having to create a MOFWBEMConnection object.

  • Made the namespace handling in the pywbem mock support explicit. It is now required to add any namespaces to the mock registry in a FakedWBEMConnection object. A method add_namespace() has been added for easy setup of the mock repository w.r.t. namespaces. The default namespace of the connection is added automatically when creating a FakedWBEMConnection object.

    Extended the support for handling namespace creation in the faked CreateInstance operation to support CIM_Namespace in addition to PG_Namespace, and improved it to properly reflect the created namespace in the mock repository.

    Added support for handling namespace deletion in the faked DeleteInstance operation for creation classes CIM_Namespace and PG_Namespace.

  • Added support for asterisks in CIM datetime values to the pywbem.CIMDateTime class, as defined in DSP0004 for representing insignificant digits. Changed the format returned by its __repr()__ method so that it now shows its internal attributes and no longer the string representation of the value. Added a __repr__() method to the pywbem.MinutesFromUTC class that shows its internal attributes. See issue #1379.

  • Added an instances property to the CIMError exception class that can be used to represent a list of error instances returned by the WBEM server in error responses. See issue #1380.

  • Pywbem now ensures that when specifying the default_namespace argument of WBEMConnection() as None, or when setting the default_namespace attribute of an already existing WBEMConnection object to None, that it is set to the built-in default namespace “root/cimv2”, instead. Previously, that was done only when not specifying the default_namespace argument.

  • All exception and warning messages produced by pywbem now are guaranteed to contain only ASCII characters. Unicode characters in the messages are represented using an escape syntax such as \uXXXX or \U00XXXXXX. That was also done for the result of any __repr__() methods of pywbem. This is important in order to avoid secondary Unicode encoding exceptions while a first exception or warning is processed. See issue #1072.

  • Docs: Added summary tables for public methods and public attributes exposed by classes defined by the “pywbem” and “pywbem_mock” Python packages, including any methods and attributes inherited from base classes. See issue #1417.

  • Improved the brand and version attributes of the WBEMServer class so that they produce reasonable results for more types of WBEM servers than just OpenPegasus and SFCB. The WBEM servers that are now recognized, are:

    • "OpenPegasus"

    • "SFCB" (Small Footprint CIM Broker)

    • "WBEM Solutions J WBEM Server"

    • "EMC CIM Server"

    • "FUJITSU CIM Object Manager"

    See issue #1422.

  • Added __str__() methods to the WBEMServer, WBEMListener, and WBEMSubscriptionManager classes in order to reduce the amount of information. Previously, this defaulted to the result of __repr__(). See issue #1424.

  • Improved the quality of any ParseError exception messages when the SAX parser detects errors in CIM-XML responses. See issue #1438.

  • Added a ToleratedServerIssueWarning class and its base class Warning. The new ToleratedServerIssueWarning is raised in cases when the WBEM server exhibits some incorrect behavior that is tolerated by pywbem.

  • Added a ModelError exception class that indicates an error with the model implemented by the WBEM server, that was detected by the pywbem client.

  • Added support for tolerating ill-formed XML in the CIM-XML response returned by the server from the attempt to invoke the CIM method GetCentralInstances() inside of WBEMServer.get_central_instances(). One server was found to return such ill-formed XML. This now causes pywbem to issue a ToleratedServerIssueWarning and to continue with the next approach for determining the central instances. See issue #1438.

  • The last_raw_request and last_raw_reply properties of WBEMConnection had previously only been set when debug was enabled on the connection. They are now always set. This was needed to support tolerating ill-formed XML, and does not cost any additional conversions. See issues #1438 and #1568.

  • In the WBEMServer class, the Interop namespace is now added to the set of namespaces in the namespaces property, if missing there. This accomodates the behavior of a particular WBEM server that was found to support the Interop namespace without representing it as a CIM instance. See issue #1430.

  • Added support for specifying the reference direction in WBEMServer.get_central_instances() by adding an optional parameter reference_direction. This was necessary because the DMTF ‘Profile Registration Profile’ (PRP) and the SNIA PRP use the CIM_ReferencedProfile association class in opposite ways: The DMTF PRP defines that the ‘Dependent’ end of that class goes to the referencing profile which is defined to be the autonomous profile, while the SNIA PRP defines that the ‘Antecedent’ end goes to the autonomous profile. See issue #1411.

  • In order to be able to distinguish errors at the CIM-XML level (e.g. required attribute missing on an XML element) and at the XML level (e.g. ill-formed XML), two subclasses of the ParseError exception have been added: CIMXMLParseError and XMLParseError, that are now raised instead of ParseError. Because these are subclasses, this change is backwards compatible for users that have caught ParseError. The new subclasses have the CIM-XML request and response data available as properties.

  • The WBEMServer.get_selected_profiles() method has been changed to match the registered names, organisations and versions of profiles case insensitively, in order to better deal with profile name changes in SMI-S. See issue #1551.

  • Docs: Clarified in the WBEMServer.get_central_instances() method that all profiles scoped by a top-level specification or autonomous profile implement the same reference direction (‘snia’ or ‘dmtf’).

  • Docs: The WBEMServer.get_central_instances() method had a description of the profile advertisement methodologies that was hard to understand without knowledge of some of the related DMTF standards. Changed that to make it understandable for pywbem users without requiring knowledge of these documents. Some of the text has been moved to a new section “Profile advertisement methodologies” in the Appendix of the pywbem documentation. As part of that, clarified how to determine the scoping class and scoping path for a component profile that does not specify them in the profile description. See issue #1398.

  • Corrected the hint how to exit in wbemcli when running on Windows.

  • Added method to statistics (class Statistics, method reset()) to reset the statistics on a WBEMConnection. This simply resets all of the statistics values gathered on that connection to their initial values.


  • Moved class NocaseDict into its own module (Issue #848).

  • Resolved several Pylint issues, including several fixes (Issue #1206).

  • Cleanup mof_compiler use of args[0] and args[1] with CIMError. (Issue #1221)

  • Removed one level of superflous copies of dictionaries in the copy() methods of the CIM object classes. These dictionaries are already copied in the setter methods for the respective attributes (Issue #1251).

  • Added and improved CIM-XML response checks at operation level (Issue #919).

  • Changed some warnings classified as UserWarning to be classified as pywbem.ToleratedServerIssueWarning, because that better fits the nature of the warnings. See issue #1595.

  • Removed the Connection ID from any exception and warning messages, so that Python warnings about the same thing are now properly folded together into one warning during end2end tests. The exception objects still contain the connection ID as a property conn_id, and the pywbem log also still shows the connection ID for each entry. See issue #1589.

Build, test, quality:

  • Add tests for the WBEMSubscriptionManager class using the pywbem mock support. This involved changing the tests for the WBEMServer class using pywbem_mock because the WBEMSubscriptionManager class depends on the existence of the classes and instances that support the pywbem WbemServer class existing in the WBEM server. A new file (wbemserver_mock.py) was added to the tests that creates the pywbem_mock for any tests that depend on classes like CIM_Namespace, CIM_ObjectManager existing in the mocked server. See issue #1250

  • Needed to upgrade PyYAML version from >=3.12 to >=3.13 due to an issue in PyYAML on Python 3.7, that was fixed in PyYAML 3.13. See issue #1337.

  • Pinned the version of the pytest-cov package to <2.6 due to the fact that pytest-cov 2.6.0 has increased its version requirement for the coverage package from coverage>=3.7.1 to coverage>=4.4. That is in conflict with the version requirement of python-coveralls for coverage==4.0.3. This is only a workaround; An issue against python-coveralls has been opened: https://github.com/z4r/python-coveralls/issues/66

  • Reorganized the testsuite directory to better separate unit tests, function tests, end2end tests, and the tested areas (pywbem, pywbem_mock, and test utility functions). The new top level test directory is now named tests and the new directrory structure is documented in section “Testing” in the development section of the pywbem documentation and in the file tests/README.

  • Added the concept of end2end tests for pywbem. The end2end tests execute test files named test_*.py within the tests/end2endtest directory against groups of real WBEM servers defined by a WBEM server definition file in YAML syntax: tests/server_definitions/server_definition_file.yml. There is an example file example_server_definition_file.yml. There are some initial tests, and users can define their own tests.

  • For the end2end tests, added a file tests/profiles/profiles.yml that defines the discovery-related characteristics of a number of DMTF and SNIA management profiles, and that is used to drive profile discovery related tests against WBEM servers.

  • Added toleration support in the CIM-XML response parsing for WBEM servers that return attribute TYPE with an empty string instead of omitting it. As part of that, improved the checking for valid values of the TYPE attribute. See issue #1564.

  • Improved testing of the tocimxml() and tocimxmlstr() methods of the CIM object classes (e.g. CIMinstance) by adding validation against the CIM-XML DTD, and by adding tests for the indent parameter of tocimxmlstr().

  • Added support for running pylint also on Python 3.x. See issue #1640.

  • Improved the makefile for use on native Windows. See issue #1631. Details:

    • Some GNU make versions on native Windows have an issue with double quotes in make $(shell ..) commands; removed the use of double quotes. As a result, most inline python commands have been moved into new small scripts in the tools directory. Also, several make targets that used to produce log files, no longer can do that and the user needs to redirect the make invocation in order to get a log file.

    • Removed dependencies on most UNIX-like commands (touch, tee, bash, rm, find, xargs) when using make on native Windows.

    • Encapsulated file removal and copy commands to be compatible between native Windows and other platforms.

    • Updated the appveyor.yml file to check only the new, smaller, list of commands.

13.27. pywbem 0.12.0

Released: 2018-04-11

Incompatible changes:

  • Finalized the Iter support that was experimental so far. This affects the Iter…() methods of class WBEMConnection, the use_pull_operations init parameter and instance attribute of class WBEMConnection, and the iter-related shortcuts in the wbemcli script.

  • The following initialization parameters of some CIM object classes that are required not to be None (as per the documentation) are now enforced not to be None, and ValueError is now raised when providing them as None:

    • CIMInstanceName.classname (already raised ValueError)

    • CIMInstance.classname

    • CIMClassName.classname (previously raised TypeError)

    • CIMClass.classname

    • CIMProperty.name (already raised ValueError)

    • CIMMethod.name (previously raised TypeError)

    • CIMParameter.name

    • CIMParameter.type

    • CIMQualifier.name

    • CIMQualifierDeclaration.name

    • CIMQualifierDeclaration.type

    Unless otherwise noted, the previous behavior was to tolerate None.

    Note that in all cases, the requirement not to be None had previously been documented.

  • When setting some attributes of CIM object classes that are required not to be None (as per the documentation), ValueError is now raised when attempting to set them to None:

    • CIMInstanceName.classname

    • CIMInstance.classname

    • CIMClassName.classname

    • CIMClass.classname

    • CIMProperty.name

    • CIMMethod.name

    • CIMParameter.name

    • CIMParameter.type

    • CIMQualifier.name

    • CIMQualifierDeclaration.name

    • CIMQualifierDeclaration.type

    The previous behavior was to tolerate None.

    Note that in all cases, the requirement not to be None had previously been documented.

  • When initializing objects of the CIM object classes CIMProperty and CIMQualifier with a type parameter of None, and when initializing the properties of CIMInstance, their CIM type is (and has previously been) inferred from the value.

    If inferring the type is not possible (for example because the value is a Python integer, float, long (Python 2 only), or None), the exception that is raised is now ValueError. Previously, TypeError was raised in that case.

  • When setting the type attribute of the CIM object classes CIMProperty and CIMQualifier, the type is now enforced not to be None, and ValueError is raised when providing it as None.

    Previously, setting a type of None was tolerated.

    Note that in both cases, the requirement not to be None had previously been documented.

  • For CIM elements passed as dictionaries into CIM object classes (i.e. the aparameters/attributes properties, keybindings, parameters, qualifiers), the consistency between the dictionary key and the name of the CIM object that is the dictionary value is now checked and ValueError is raised if it does not match (case insensitively).

  • Initializing a CIMProperty object as an embedded object or embedded instance and with a value of None now requires specifying type=”string”.

    Previously (but only starting with pywbem 0.8.1), the type was inferred from the embedded_instance parameter and thus could be omitted. This new requirement for specifying type is not really intentional, but a by-product of simplifying the implementation of CIMProperty. It was considered acceptable because that should not be a common case (and has not been supported before pywbem 0.8.1 anyway).

  • When converting a CIMInstance object to CIM-XML using its tocimxml() method, instance properties whose values are simple types instead of CIMProperty objects are no longer converted into CIMProperty objects because that has worked only for a very limited set of cases, and because they are required to be CIMProperty objects anyway. A TypeError is now raised if that is detected.

  • The atomic_to_cim_xml() function now raises TypeError if it cannot convert the input value. Previously, it used str() on the input value as a last resort.

  • The global tocimxml() function now raises TypeError if it cannot convert the input value. Previously, it raised ValueError.

  • The CIMQualifierDeclaration.tomof() method now generates the flavor keywords only if the tosubclass and overridable attributes are set to True or False. Previously, default keywords were generated when these attributes were set to None (and these defaults were the opposite of the defaults defined in DSP0004 and DSP0201). The new behavior is consistent with the definition that None for these attributes means the information is not available, and it is also consistent with the tocimxml() method. If you used this method and relied on the defaults being generated, you will now have to set these attributes explicitly.

  • If a WBEM server specifies contradicting TYPE and VALUETYPE attributes on a KEYVALUE element returned to the client (this element is used in instance paths, e.g. for the result of the EnumerateInstanceNames operation), TYPE now takes precedence. Previously, VALUETYPE took precedence. DSP0201 leaves the handling of such discrepancies open, and it seems more logical to let the more precise value take precedence. Because WBEM servers are required to specify consistent values for these attributes, this change should not affect users of pywbem.

  • Values of CIM type ‘reference’ in CIM objects (CIMProperty, CIMParameter, CIMQualifier, and CIMQualifierDeclaration) may now be CIMClassName objects (i.e. class paths). This has been changed for consistency with DSP0201 (Issue #1035).

  • Renamed the enable_stats init argument of class WBEMConnection to stats_enabled, as part of its finalization. It was experimental, before. (Issue #1068).

  • Renamed the -e, –enable-stats options of the wbemcli utility to –statistics , as part of its finalization. It was experimental, before. (Issue #1068).

  • Changed the WBEMConnection attributes for the last request and last response to become read-only (last_request, last_raw_request, last_reply, last_raw_reply). They have never been supposed to be writeable by users. (Issue #1068).

  • In the wbemcli shell, renamed the following function parameters. This is only relevant if you wrote scripts against the shell and named these parameters: (Issue #1110).

    • The “op” parameter of iter functions that have it was renamed to “ip”, because it is always an instance path.

    • The “qi” parameter of the query functions was renamed to “qs”, for consistency with the filtering functions.

    • The “fq” parameter of the filtering functions was renamed to “fs”, for consistency with the query functions.

  • Revamped the (experimental) logger configuration mechanism completely. It remains experimental. See issue #859. The changes include:

    • Created 3 methods in WBEMConnection that allow pywbem logs to be configured and activated. These methods contain parameters for: a. configuring the Python loggers for either/or/both the api and http loggers. b. Setting the level of detail in the log output. c. Activating each logger within WBEMConnection.

    • Allow for the standard Python loggers to be used to configure logger names that will be used by the pywbem loggers. This allows the pywbem loggers to be compatible with user code that creates their specific logger configurations.

    • Eliminated the PyWBEMLogger class that was the original logging setup tool in pywbem 0.11.0 since its use was incompatible with using standard Python logging configuration methods to define loggers.

    • Created a function in the _logging module that allows pywbem logging to be defined by a single string input.

    • Addition of a new property conn_id to WBEMConnection which is a unique identifier for each WBEMConnection object and is part of each log record. This allows linking logs for each WBEMConnection in the log.


  • Deprecated modifications of the connection-related attributes of WBEMConnection objects (Issue #1068).

  • Deprecated the value None for the value argument of pywbem.tocimxml(), because it generates an empty VALUE element (which represents an empty string) (Issue #1136).


  • Finalized the time statistics support that was experimental so far. This affects classes OperationStatistic, Statistics, the init argument enable_stats of class WBEMConnection, and the properties stats_enabled, statistics, last_operation_time, and last_server_response_time of class WBEMConnection. As part of that, renamed the enable_stats init argument to stats_enabled, consistent with the corresponding property.

  • For CIMInstanceName, the values of keybindings can now be specified as CIMProperty objects from which their value will be used (this is in addition to specfying the values of keybindings as CIM data types).

  • For CIMInstanceName, values of keybindings specified as binary strings are now converted to Unicode.

  • For CIMInstanceName, the type of the input keybindings is now checked and TypeError is raised if the value is not a CIM data type.

  • Updating attributes of CIM objects (e.g. updating CIMInstance.properties) now goes through the same conversions (e.g. binary string to unicode string) as for the same-named constructor parameters. As a result, it is ensured that all attributes that are strings (e.g. name) contain unicode strings, all attributes that are booleans (e.g. propagated) contain bool values, and all CIM values (e.g. CIMProperty.value) are of a CIM data type.

  • Added static from_wbem_uri() methods to CIMInstanceName and CIMClassName, that create a new object of these classes from a WBEM URI string.

  • Added a cimvalue() function that converts input values specified at the interface of CIM object classes, into the internally stored CIM value. It is mainly used internally by the CIM object classes, but has also been made available at the public API of pywbem. Its functionality is very close to the existing tocimobj() function.

  • Changed public attributes to Python properties with getter and setter methods in all CIM object classes (e.g. CIMInstance). This allows normalizing and applying checks for new values of these properties. In addition, it solves the Sphinx warnings about duplicate ‘host’ attribute when building the documentation (issue #761).

  • Added catching of some exceptions M2Cryptro can raise that were not caught so far: SSL.SSLError, SSL.Checker.SSLVerificationError. These exceptions are now transformed into pywbem.ConnectionError and will therefore be caught by a caller of pywbem who is prepared for pywbem’s own exceptions, but not necessarily aware of these M2Crypto exceptions. (issue #891)

  • Added the catching of a httplib base exception to make sure all httplib exceptions are surfaced by WBEMConnection methods as a pywbem.ConnectionError (issue #916).

  • In the tomof() methods of the CIM object classes, changed the formatting of the generated MOF to be more consistent with the CIM Schema MOF.

  • Added new methods CIMInstanceName.to_wbem_uri() and CIMClassName.to_wbem_uri() that return the path as a WBEM URI string that conforms to untyped WBEM URIs as defined in DSP0207. The CIMInstanceName.__str__() and CIMClassName.__str__() methods still return the same WBEM URI string they previously did, but that is a historical format close to but not conformant to DSP0207 (issues #928, #943).

  • Improved the way CIM-XML parsing errors are handled, by providing the original traceback information when re-raising a low-level exception as pywbem.ParseError, and re-established the improved exception message for invalid UTF-8 and XML characters that was broken since the move to using the SAX parser.

  • Added support for properly hashing CIM objects (CIMClass, etc.) and CIM data types (particularly CIMDateTime), as long as these (mutable) objects are not changed. Because the objects must not be changed while being in a set, a new term “changed-hashable” has been introduced that describes this. This allows to have CIM objects in sets such that they behave as one would expect from a set. Previously, two CIM objects that were equal could both be in the same set, because their hash value was different. In the documentation, added a new section “Putting CIM objects in sets” that explains the considerations when utilizing the hash value of the mutable CIM objects.

  • Added support for retrieving the operation recorders of a connection via a new operation_recorders read-only property (Issue #976).

  • Extended CIMParameter to represent CIM parameter values in method invocations. As part of that, removed the deprecation from its value property and added an embedded_object property. Extended the testcases accordingly. Added an as_value argument to CIMParameter.tocimxml() and to tocimxmlstr() to allow control over whether the object is interpreted as a value or as a declaration. (Issue #950).

  • Added a new conversion function to the public API: cimtype() takes a CIM data typed value (e.g. Uint8(42)) and returns the CIM data type name for it (e.g. “uint8”). Previously, this was an internal function (Issue #993).

  • Added a new conversion function to the public API: type_from_name() takes a CIM data type name (e.g. “uint8”) and returns the Python type representing that CIM data type (e.g. Uint8). Previously, this was an internal function (Issue #993).

  • Extended WBEMConnection.InvokeMethod() to accept an iterable of CIMParameter objects as input parameters, in addition to the currently supported forms of input parameters. This allows specifying the embedded_object attribute (instead of inferring it from the value). (Issue #950).

  • Docs: Improved the descriptions of CIM objects and their attributes to describe how the attributes are used to determine object equality and the hash value of the object.

  • The child elements of CIM objects (e.g. properties of CIMClass) now preserve the order in which they had been added to their parent object. Methods such as tomof(), tocimxml(), and to_wbem_uri() now output the child elements of the target object in the preserved order. If a child element is initialized with an object that does not preserve order of items (e.g. a standard dict), a UserWarning is now issued.

  • Added a new kind of input object for initializing CIM objects: An iterable of the desired CIM object type, and documented the already supported iterable of tuple(key, value) as a further input type.

  • Improved checking of input objects when initializing a list of child elements in a CIM object(e.g. properties of CIMClass), and raise TypeError if not supported.

  • Made the ValueMapping class more generally available and no longer tied to the WBEMServer class. It is now described in the “Client” chapter of the documentation, and it is possible to create new ValueMapping objects by providing a WBEMConnection object (as an alternative to the WBEMServer object that is still supported, for compatibility). Issue #997.

  • Extended the ValueMapping class; its objects now remember the context in which the value mapping is defined, in terms of the connection, namespace, class, and of the mapped CIM element (i.e. property, method or parameter).

  • Extended the ValueMapping class by adding a __repr__() method that prints all of its attributes, for debug purposes.

  • Added capability to mock WBEM Operations so that both pywbem and pywbem users can create unit tests without requiring a working WBEM Server, This feature allows the user to create CIM objects in a mock WBEM Server defined with the class FakedWBEMConnection and substitute that class for WBEMConnection to create a mock WBEM Server that responds to wbem operations. This enhancement is documented in the pywbem documentation section 10, Mock Support. See issue #838.

  • Improved the messages in ParseError exceptions raised when parsing CIM-XML received from a WBEM server.

  • The type of keybinding names in CIMInstanceName objects is now checked to be a string (or None, for unnamed keys). The requirement for a string has always been documented. This was changed as part of addressing issue #1026.

  • Fixed the support for unnamed keys (i.e. instance paths with KEYVALUE or VALUE.REFERENCE elements without a parent KEYBINDINGS element). DSP0201 allows for this as a special case. (Issue #1026).

  • Added support for instance qualifiers when parsing received CIM-XML responses (Issue #1030).

  • CIM data type names specified for the type or return_type parameter of CIM objects are now checked for validity, and ValueError is raised if not valid (Issue 1043).

  • Added a new method CIMInstanceName.from_instance() to create CIMInstanceName objects from class and instance. This was done as part of building the pywbem_mock environment. See issue #1069.

  • The url property of WBEMConnection now transforms its input value to unicode. (Issue #1068).

  • In the WBEMListener class, added support for using it as a context manager in order to ensure that the listener is stopped automatically upon leaving the context manager scope.

  • In the WBEMListener class, added properties http_started and https_started indicating whether the listener is started for the respective port.

  • CIMInstance.tocimxml()/tocimxmlstr() were extended to allow controlling whether the path is ignored even if present. This capability is used for ignoring the path in embedded instance parameter values (as part of fixing issue #1136).

  • CIMInstanceName/CIMClassName.tocimxml()/tocimxmlstr() were extended to allow controlling whether the host and namespace are ignored even if present. This capability is not currently used but was introduced for consistency with ignoring the path on CIMInstance.tocimxml()/tocimxmlstr() (as part of fixing issue #1136).

  • Improved the handling of certain connection errors by retrying and by issuing user warnings instead of printing if debug. (Issue #1118).

Bug fixes:

  • Added libxml2 operating system package as a dependency. It provides xmllint, which is used for testing.

  • Fixed issue where MOFCompiler.compile_str() could not compile MOF that was defined through a MOF file containing #pragma include statements. This precluded using a string to define the classes to include in a mof compile in a string and required that the include be a file. See issue #1138.

  • Fixed issue in IterReferenceNames and IterAssociatiorNames where it was not passing the IncludeQualifiers input parameter to the OpenReferenceNames operation. This should not have been a significant issue since in general qualifiers are not parts of instances. See issue #833.

  • Also changed code in IterQueryInstances were parameters that are required by the called ExecQuery and OpenQueryInstances were defined as named arguments where since they are required, the name component is not required. This should not change operations except that when we were mocking the methods, it returns sees the parameter as name=value rather than value. See issue #833.

  • Fixed the bug that CIMInstanceName.tocimxml() produced invalid CIM-XML if a keybinding value was set to an invalid CIM object type (e.g. to CIMParameter). The only allowed CIM object type for a keybinding value is CIMInstanceName, for keys that are references. Now, TypeError is raised in that case.

  • Fix issues in cim_operations.py where a open or pull that returned with missing enumeration_context and eos would pass one of the internal tests. See issue #844

  • Fixed an error in the CIM-XML representation of qualifier values where the values were not properly converted to CIM-XML. They are now properly converted using atomic_to_cim_xml().

  • Fixed local authentication for OpenWBEM and OpenPegasus. Due to one bug introduced in pywbem 0.9.0, it was disabled by accident. A second bug in local authentication has been there at least since pywbem 0.7.0.

  • Fixed missing exception handling for CIM-XML parsing errors when parsing embedded objects. This could have caused low-level exceptions to be raised at the pywbem API.

  • Fixed the problem that a for-loop over CIMInstance / CIMInstanceName objects iterated over the lower-case-converted property/key names. They now iterate over the names in their original lexical case, as documented, and consistent with the other iteration mechanisms for CIM objects. The test cases that were supposed to verify that did not perform the correct check and were also fixed.

  • Fixed the bug that an (unsupported!) reference type could be specified for the return value of CIM methods, by raising ValueError if CIMMethod.return_value is initialized or set to “reference”.

  • Fixed issue introduced in mof_compiler when atomic_to_cimxml was cleaned up that did not allow using alias with some association classes. Also added test for this issue. See issue #936

  • Fixed the CIMInstanceName.__str__() and CIMClassName.__str__() methods to now return WBEM URI strings that are compliant to DSP0207. Changes include:

    • Local WBEM URIs (i.e. when authority/host is not set) now have a leading slash. That leading slash was previously omitted.

    • WBEM URIs with no namespace set now have a colon before the class name. Previously, the colon was produced only when a namespace was set.

    Issue #928.

  • Fixed the comparison of CIMProperty objects to also consider the embedded_object attribute. Previously, this attribute was not considered, probably due to mistake (there is no reason not to consider it, as it is a user-provided input argument). Fixed the yaml testcases for embedded objects that failed as a result of that fix. These testcases did not set the embedded_object attribute to ‘object’, so it got its default value ‘instance’, which caused the testcases to fail. Needed to use the long form for specifying property values inthe yaml now, because the short form does not allow for specifying the embedded_object attribute.

  • Fixed the comparison of CIMProperty and CIMMethod objects to compare their class_origin attribute case-insensitively. If set, it contains a CIM class name. Previously, that attribute was compared case-sensitively.

  • Fixed the use of hard coded value limits in the ValueMapping class for open ranges of the ValueMap qualifier, by making them dependent on the data type of the qualified element. This only affected elements with data types other than Uint32 and only if the ValueMap qualifier defined open ranges whose open side reached the min or max limit (i.e. was first or last in the list). Extended the test cases to include this situation (Issue #992).

  • Fixed the lookup of the Values string for negative values in the ValueMapping class (found when solving #992).

  • Added support for octal, binary and hex numbers when parsing MOF using the MOFCompiler class, in compliance with DSP0004 (Issue #974). Extended the testcases to cover such numbers.

  • Fixed the issue that any use of CIMDateTime objects in the TestClientRecorder resulted in a RepresenterError being raised, by adding PyYAML representer and constructor functions that serialize CIMDateTime objects to YAML. Extended the testcases in test_recorder.py accordingly (Issues #702, #588).

  • Fixed an AttributeError when ValueMapping was used for methods, when an internal method attempted to access the ‘type’ attribute of the CIM object. For methods, that attribute is called ‘return_type’. Testcases for methods and parameters have now been added.

  • Fixed the issue that leading and trailing slash characters in namespace names were preserved. This was leading to empty NAMESPACE/NAME elements, which can be rejected by WBEM servers. Now, leading and trailing slash characters on namespace names are stripped off in pywbem before sending the request to the server. (Issue #255).

  • Fixed the issue that the parser for CIM-XML received from the WBEM server required the VALUETYPE attribute of the KEYVALUE element. DSP0201 defines VALUETYPE as optional, with a default of ‘string’. That is now implemented.

  • Fixed the issue that the parser for CIM-XML received from the WBEM server did not support hexadecimal representations of integers in the KEYVALUE element. They are now supported.

  • Fixed the issue that the parser for CIM-XML received from the WBEM server accepted characters for char16 typed values outside of the range for UCS-2 characters. Such characters are now rejected by raising ParseError.

  • Fixed the issue that the parser for CIM-XML received from the WBEM server tolerated invalid child elements under INSTANCE, ERROR and PROPERTY.REFERENCE elements, and invalid attributes on the PROPERTY.ARRAY element. This now results in a ParseError being raised.

  • Fixed the issue that the parser for CIM-XML received from the WBEM server did not set the propagated attribute to False in CIMProperty objects retrieved from operations (e.g. as part of a class or instance), as required by DSP0201. It does now.

  • Fixed the issue that VALUE.NULL (for representing array items that are NULL) was not supported in array values returned by the WBEM server. Note that it already had been supported for array values sent to the server, or in CIM-XML created by toximcml() methods (Issue #1022).

  • Fixed the issue that the size of a fixed-size array property declaration was ignored when retrieving classes from CIM operations. It is now represented in the array_size attribute of the returned CIMProperty objects. (Issue #1031).

  • Fixed the issue that the xml:lang attributes that are allowed on some CIM-XML elements have been rejected by raising ParseError. They are now tolerated but ignored (Issue #1033).

  • Fixed the issue that mixed case values (e.g. “True”) for the boolean attributes of the QUALIFIER element in CIM-XML was not supported and resulted in ParseError to be raised (Issue #1042).

  • Fixed the issue that an empty boolean value in a CIM-XML response returned from a WBEM server was accepted and treated as a NULL value. This treatment does not conform to DSP0201. Empty boolean values now cause a UserWarning to be issued, but otherwise continue to work as before. (Issue #1032).

  • Fixed the issue that invalid values were accepted for the boolean attributes of the SCOPE element in CIM-XML received from a WBEM server. They now cause ParseError to be raised (Issue #1040).

  • Fixed the issue that invalid values for the boolean attributes of QUALIFIER.DECLARATION elements in CIM-XML responses from WBEM servers were tolerated and treated as False. They now cause ParseError to be raised (Issue #1041).

  • Fixed the incorrect default value for the propagated constructor parameter of CIMMethod. Previously, the default value was False and it has been corrected to be None, consistent with its meaning of “information not available”. The only CIM operations that take a CIMMethod object as input are CreateClass() and ModifyClass() (as part of the class that is created or modified). Because WBEM servers must ignore the propagated information on any elements in the provided class, this change is backwards compatible for the CIM operations. (Issue #1039).

  • Added support for setting the propagated attribute on CIMQualifier objects returned from CIM operations to a default of False when it is not specified in the CIM-XML response, consistent with DSP0201, and consistent with how it was already done for other CIM objects. This change should normally be backwards compatible for pywbem users, because they don’t even know whether the information has been set by the server or defaulted by the client as it is now done. (Issue #1039).

  • Added support for setting the flavor attributes on CIMQualifier and CIMQUalifierDeclaration objects returned from CIM operations to their default values defined in CIM-XML, when they are not specified in the CIM-XML response, consistent with DSP0201, and consistent with how it was already done for other CIM objects. This change should normally be backwards compatible for pywbem users, because they don’t even know whether the information has been set by the server or defaulted by the client as it is now done. (Issue #1039).

  • In the wbemcli shell, fixed the “*params” parameter of the im() function, to become “params” (an iterable). (Issue #1110).

  • For the InvokeMethod operation, fixed that passing Python None as an input parameter valus resulted in TypeError. Extended the testclient testcases for InvokeMethod accordingly. Documented that None is a valid CIM typed value (Issue #1123).

  • Fixed the error that embedded instances in parameter values were incorrectly represented with the CIM-XML element corresponding to their path (e.g. VALUE.NAMEDINSTANCE). The path is now correctly ignored on embedded instance parameter values, and they are always represented as INSTANCE elements (Issue #1136).

  • Fixed the error that CIMInstance.tocimxml()/tocimxmlstr() represented its instance path always with a VALUE.NAMEDINSTANCE element and generated incorrect child elements depending which components of the instance path were present. Now, the element for the path depends correctly on the components that are present in the instance path (Issue #1136).

  • Fixed the missing support for generating a VALUE.INSTANCEWITHPATH element in CIM-XML. This is needed when a CIMInstance with path has namespace and host. This error was previously now showing up because the VALUE.NAMEDINSTANCE element was always created (Issue #1136).

  • Fixed the error that the tocimxml() and tocimxmlstr() methods of CIMProperty, CIMQualifier and CIMQualifierDeclaration represented NULL entries in array values using an empty VALUE element. They now correctly generate the VALUE.NULL element for NULL entries (Issue #1136). In order to provide for backwards compatibility to WBEM servers that do not support VALUE.NULL, a config option SEND_VALUE_NULL was added that by default sends VALUE.NULL, but allows for disabling that (Issue #1144).

  • Fixed the error that the special float values INF, -INF and NaN were represented in lower case in CIM-XML. DSP0201 requires the exact case INF, -INF and NaN (Issue #1136).

  • Fixed the error that float values in CIM-XML were truncated to six significant digits. They now have at least the minimum number of significant digits required by DSP0201: 11 for real32, and 17 for real64. (Issue #1136).

  • In the WBEMServer.get_central_instances() method, fixed the error that a CIM status code of CIM_ERR_METHOD_NOT_FOUND returned when attempting to invoke the GetCentralInstances() CIM method lead to failing the get_central_instances() method. Now, execution continues with attempting the next approach for determining the central instances (Issue #1145).

  • In the mof_compiler.bat script file, fixed the issue that it did not return an exit code if the MOF compiler failed (Issue #1156).

  • Several fixes and display related improvements in the mof_compiler script: MOF file not found is now also handled instead of failing with an exception traceback. Exceptions are now displayed before exiting. Dry-run mode is now displayed, for information. The target MOF repository is now always displayed; previously it was displayed only in verbose mode. (Issue #1157).


  • Removed the unimplemented and unused popitem() method of NocaseDict.

  • The atomic_to_cim_xml() function and any generated CIM-XML now generates boolean values in upper case ‘TRUE’ and ‘FALSE’, following the recommendation in DSP0201. Previously, boolean values were produced in lower case. This change is compatible for WBEM servers that meet the requirement of DSP0201 to treat boolean values case-insensitively.

  • Cleaned up the implementation of CIMProperty/CIMParameter.tocimxml(), so that it is now easier understandable (as part of fixing issue #1136).

  • Removed any logging.NullHandler objects on pywbem loggers, including the pywbem listener loggers, because it turns out that for the use of loggers as a trace tool, the DEBUG level is used by the pywbem client and the INFO level is used by the pywbem listener, which are both not printed by default by the Python root logger, so the use of null handlers is not really needed (Issue #1175).

Build, test, quality:

  • Added a boolean config variable DEBUG_WARNING_ORIGIN that when enabled causes a stack traceback to be added to the message of most warnings issued by pywbem. This allows identifying which code originated the warning.

  • Cleaned up a lot of pylint warnings, for things like missing-doc, etc. so that we can actually review the remainder. See issue #808.

  • Update to current DMTF Schema (2.49.0) for pywbem tests. This also validates that pywbem can compile this DMTF released schema. See issue #816

  • Add unit tests for the iter… operations. See issue #818

  • Migrated installation and development setup to use pbr and Pip requirements files. As a consequence, removed files no longer used: os_setup.py, uninstall_pbr_on_py26.py.

  • Added ability to test with minimum Python package level, according to the package versions defined in minimum-constraints.txt.

  • Fixed a setup issue on Travis CI with duplicate metadata directories for the setuptools package. This issue prevented downgrading setuptools for the test with minimum package levels. Added script remove_duplicate_setuptools.py for that.

  • Reorganized the make targets for installing pywbem and its dependencies somewhat. They now need to be used in this order:

    • make install - installs pywbem and dependencies for runtime

    • make develop - installs dependencies for development

    There are two new targets (that are included in the targets above, when first run after a make clobber):

    • make install_os - installs OS-level dependencies for runtime

    • make develop_os - installs OS-level dependencies for development

  • Enabled testing on OS-X in the Travis CI.

  • Added unit test for WBEMServer class using pywbem_mock. See the file testsuite/test_wbemserverclass.py. This test is incomplete today but tests most of the main paths.


Improved the complete pywbem documentation (Issue #1115). Some specific changes are listed in the remainder of this section.

  • The installation for Windows on Python 2.7 now requires an additional manual step for installing the M2CryptoWin32/64 Python package. For details, see the Installation section in the documentation.

  • Fixed the documentation of the CIMInstanceName.keybindings setter method, by adding ‘number’ as an allowed input type.

  • Moved the detail documentation of input to child element lists (e.g. for properties of CIMInstance) as a data type ‘properties input object’, etc., into the glossary. These types are now referenced as the type of the corresponding parameter.

  • Clarified that the return type of BaseOperationRecorder.open_file() is a file-like object and that the caller is responsible for closing that file.

  • Clarified in the description of the return_type init parameter of CIMMethod that array return types, void return types, and reference return types are all not supported in pywbem. See issue #1038, for void.

  • Fixed the type string for the keys of the CIMInstance.qualifiers attribute to be unicode string.

  • Many clarifications for CIM objects, e.g. about case preservation of CIM element names, or making copies of input parameters vs. storing the provided object.

  • Improved the description of the WBEMConnection.ModifyInstance() method.

  • Improved the description of the tocimxml() and tocimxmlstr() methods on CIM objects.

  • Clarifications and small fixes in the documentation of the WBEMConnection.Iter…() generator functions.

  • Added “New in pywbem M.N …” text to descriptions of anything that was introduced in pywbem 0.8.0 or later.

  • Clarified use of ca_certs parameter of WBEMConnection and its defaults in DEFAULT_CA_CERT_PATHS.

  • Clarified that the instance path returned by the CreateInstance() operation method has classname, keybindings and namespace set.

  • For CIM floating point types (real32, real64), added cautionary text for equality comparison and hash value calculation.

  • Clarified that CIM-XML multi-requests are not supported by pywbem and why that is not a functional limitation.

  • In the wbemcli shell, improved and fixed the description of operation functions (Issue #1110).

  • Improved and fixed the description of WBEMConnection operation methods (Issue #1110).

  • Improved and fixed the description of the pywbem statistics support (Issue #1115).

  • Clarified the use of logging for the pywbem client (in section 4.8 “WBEM operation logging”) and for the pywbem listener (in section 6.1.2 “Logging in the listener” (Issue #1175).

13.28. pywbem 0.11.0

Released: 2017-09-27

This version contains all fixes up to pywbem 0.10.1.

Incompatible changes:



  • Added support for automatically finding out whether for RHEL/CentOS/Fedora, the IUS version of the Python development packages should be used, dependent on whether the Python package is from IUS.

  • Added the MOF compiler API to the pywbem namespace. For compatibility, it is still available in the pywbem.mof_compiler namespace. See issue #634.

  • Modify the pattern used for cim_operation.py request methods from using except/else to use except/finally to reduce number of places code like the recorder call and future statistics, log, etc. calls have to be included. No other functional changes. See issue #680

  • Add operation statistics gathering experimental. Adds the class Statistics which serves as a common place to gather execution time and request/reply size information on server requests and replies. The detailed information is available in WBEMConnection for operation execution time and request/reply content size at the end of each operation.

    When statistics gathering is enabled, the information is placed into the Statistics class where min/max/avg information is available for each operation type. Statistics gathering is enabled if the WBEMConnection attribute enable_stats is True.

    Statistics can be externalized through the snapshot method of the Statistics class.

    The functionality is marked experimental for the current release

    See issue #761

  • Extended development.rst to define how to update dmtf mof and move thevariables for this process from test_compiler.py to a separate file to make them easy to find. See issue #54

  • Changed CIMInstancename.__repr__() to show the key bindings in the iteration order, and no longer in sorted order, to better debug iteration order related issues. See issue #585.

  • Add new notebooks to the tutorials including notebooks for the WBEMServer class, the pull operations, and the Iter operations. See issue #682

  • Added unit test for recorder. See issue #676

  • Ensured that CIMDateTime objects for point in time values are timezone-aware when supplied with a timezone-naive datetime object. This does not change the behavior, but increases code clarity. Clarified that in the documentation of CIMDateTime. See issue #698.

  • Extend the documentation to list support for specific non-specification features of some WBEM servers. Issue #653.

  • Extend cim_http.py, cim_operations.py, _statistics.py to handle optional WBEMServerResponseTime header from WBEMServer. This HTTP header reports the server time in microseconds from request to response in the operation response. The extension adds the WBEMConnection property last_server_response_time and places the time from the server into the attribute for this property.

  • Extend pywbem to handle optional WBEMServerResponseTime header from a WBEM server. This HTTP header reports the server time in microseconds from request to response in the operation response. The extension adds the WBEMConnection property last_server_response_time and places the time from the server into the attribute for this property. It also passes server_response_time to statistics so that max/min/avg are maintained. See issue # 687.

  • Add test for wbemcli script that will execute the script and test results. issue #569

  • Experimental: Add logging to record information passing between the pywbem client and WBEM servers both for the WBEMConnection methods that drive information interchange and the http requests and responses. Logging includes a new module (_logging.py) that provides configuration of logging. The logging extends WBEMConnection with methods so that the user can chose to log a)Calls and returns from the WBEMConnection methods that interact with the WBEMServer (ex. getClass), b)http request/responses, c)both. The logging uses the python logging package and the output can be directed to either stderr or a file. The user can chose to log the complete requests and responses or size limited subsets (log_detail level). See issue #691.

  • Clarify documentation on wbem operation recorder in client.rst. see issue #741

  • Added an optional class path to the CIMClass class, as a convenience for the user in order so that CIMClass objects are self-contained w.r.t. their path. The class path is set in CIMClass objects returned by the GetClass, EmumerateClasses, and the class-level Associators and References operations. The path is added purely on the client side, based on existing information returned from WBEM server. This change does therefore not affect the interactions with WBEM servers at all. issue #349.

  • Added a host property to WBEMConnection which contains the host:port component of the WBEM server’s URL. This helps addressing issue #349.

  • Made sure that repr() on CIM objects produces a reliable order of items such as properties, qualifiers, methods, parameters, scopes, by ordering them by their names. This makes debugging using repr() easier for pywbem users, and it also helps in some unit test cases of pywbem itself.

  • Made sure that str() on CIMInstanceName produces reliable order of key bindings in the returned WBEM URI, by ordering them by key name.

Bug fixes:

  • Fix issue with MaxObjectCount on PullInstances and PullInstancePaths CIM_Operations.py methods. The MaxObjectCount was defined as a keyword parameter where it should have been be positional. This should NOT impact clients unless they did not supply the parameter at all so that the result was None which is illegal(Pull… operations MUST include MaxObjectCount). In that case, server should return error. Also extends these requests to test the Pull.. methods for valid MaxObjectCount and context parameters. See issue #656.

  • Add constructor parameter checking to QualifierDeclaration. See issue #645.

  • Fixed TypeError “‘str’ does not support the buffer interface” during ‘setup.py develop’ on Python 3.x on Windows (issue #661).

  • Fixed ValueError “underlying buffer has been detached” during ‘setup.py develop’ on Python 3.x on Windows (issue #661).

  • Fixed names of Python development packages for SLES/OpenSUSE.

  • Fixed issue in mof_compiler where instance aliases were incomplete. They only included the class component so that if they were used in the definition of other instances (ex. to define an association where a reference property was the aliased instance, the reference path was incomplete.) This is now a path with keybindings. Note: It is the responsibility of the user to make these instances complete (i.e. with all key properties) see issue #679

  • Correct documentation issue in cim_obj (Exceptions definition missing). See issue #677

  • Add more mock tests. ModifyInstance was missing and some others were missing an error test. issue#61

  • add –version option to mof_compiler and pywbem cli tools. Generates the pywbem version string. See issue # 630

  • Fix several issues in recorder including issue #609:indent by 4, # 676: invalid yaml representation for namedtuples that result from open/pull operations, #700 and #663: recorder won’t write utf8 (at least for our tests), #698 : datetime test failures because of timezone, Most of these are tested with the new test_recorder.py unit test.

  • Fix error in wbemcli with –enable_stats arg. Since this was added in this release, the bug was never public. See issue #709

  • Remove extra print in cim_operations. See issue # 704

  • Correct Error in run_cimoperations with use of namespace in iter… function See issue #718. This was a test code issue. No changes to the iter operations.

  • Correct issue with Recorder creating non-text files. This issue Documents the requirement for text files and also adds a static method to force creation of the recorder output as a text file. See issue # 700

  • Correct issue in wbemcli.bat where it was not returning error level. see issue #727

  • Correct issue where dependency pip installs end up with old version of coverage package. This old version generates unwanted deprecation messages that are fixed after version 4.03. This requires a change to the travis.yaml file directly to force a reinstall of coverage. See issue #734

  • Fixed the issue that CIMProperty.__init__() had an incorrect check for the reference_class parameter, where it checked the class name specified in that parameter to be the creation class of the referenced instance. According to DSP0201, reference_class is the declared class, which can be a superclass of the creation class of the referenced instance. This is related to issue #598

  • Modify mof_compiler documentation to indication issues with property names that are compiler keywords. See issue #62.

  • Correct issue where dependency pip installs end up with old version of coverage package. This old version generates unwanted deprecation messages that are fixed after version 4.03. This requires a change to the travis.yaml file directly to force a reinstall of coverage. See issue #734

  • Fix minor doc issue in client.rst. See issue #740.

  • Fixed that older versions of pip and setuptools failed or were rejected on some older Linux distros during make develop or make install, by upgrading them in these steps. See issues #759 and #760.

  • Clean up pylint new messages tied to use of len and if else. See issue #770

Build, test, quality:

  • Added Python 3.6 to the environments to be tested in Travis CI and Appveyor CI (issue #661).

  • Added Python 2.6, 3.4 and 3.5 to the environments to be tested in Appveyor CI (issue #661).

  • Fixed uninstall_pbr_on_py26.py to remove ‘pbr’ only if installed (issue #661).

  • Fixed TypeError about dict ordering on Python 3.6 in unit test ‘test_nocasedict.TestOrdering’ (issue #661).

  • Added a testcase for CIMInstanceName to compare two objects with different ordering of their key bindings for equality. See issue #686.

  • In parse_property_reference() in tupleparse.py, a number of attributes of the new CIMProperty object had been updated after having created it. That bypasses the checks in its __init__() method. This has been improved to pass these values in when creating the object.

  • Tolerated incorrect Unicode characters in output of commands invoked by os_setup.py (used for installation) that sometimes occurred on Windows (e.g. on the Appveyor CI with Python 3).

  • Improved the build process to ensure that half-built artefacts are removed before building (issue #754).

  • Pinned the version of the wheel package to <0.30.0 for Python 2.6, because wheel removed Python 2.6 support in its 0.30.0 version.


  • Documented that pywbem is not supported on Python 2.6 on Windows. and that 64-bit versions of Python are not supported on Windows.

  • Added material to README and changed to use restructured text. issue #642

13.29. pywbem 0.10.0

Released: 2016-12-20

Incompatible changes:

  • All methods of the WBEMSubscriptionManager class that returned instance paths (or lists thereof) in pywbem 0.9.x now return the complete instances (or lists thereof) (pr #607).

  • In wbemcli, removed the long global function names (e.g. EnumerateInstances), and kept the short names (e.g. ei) (issue #548).


  • Experimental: Added new methods to WBEMConnection to provide integrated APIs for the non-pull and pull operations, reducing the amount of code app writers must produce and providing a pythonic (generator based) interface for the methods that enumerate instances and instance paths, enumerator associators and references. These new methods have names in the pattern Iter<name of original function>. Thus, for example the new method IterEnumerateInstances creates a new API to integrate EnumerateInstances and the OpenEnumerateInstancesWithPath / PullInstancesWithPath. (issue #466).

  • Modified the XML parser to use SAX in place of minidom for operation response processing and indication processing. This is a significant reduction in memory usage (issue #498).

  • Declared the WBEM indications API and the WBEM server API to be final. These APIs had been introduced in pywbem 0.9.0 as experimental.

  • Added enter and exit methods to WBEMSubscriptionManager to enable using it as a context manager, whose exit method automatically cleans up by calling remove_all_servers() (issue #407).

  • Added methods to the operation recorder (class BaseOperationRecorder) for disabling and enabling it (issue #493).

  • The “Name” property of indication filters created via the WBEMSubscriptionManager class can now be controlled by the user (pr #607).

  • Indication filter, listener destination and indication subscription instances created via the WBEMSubscriptionManager class, that are “owned”, are now conditionally created, dependent on the owned instances that have been discovered upon restart of the WBEMSubscriptionManager (pr #607).

  • Modified operations that have a “PropertyList” attribute to allow the “PropertyList” attribute to have a single string in addition to the iterable. Previously this caused an XML error (issue #577).

  • Added an option -s / –script to wbemcli that supports executing scripts in the wbemcli shell.

    Some example scripts are provided in the examples directory:

    • wbemcli_server.py - Creates a WBEMServer object named SERVER representing a WBEM server.

    • wbemcli_quit.py - Demo of terminating wbemcli from within a script.

    • wbemcli_display_args.py - Demo of displaying input arguments.

    • wbemcli_count_instances.py - Counts classes and instances in a server.

    • wbemcli_clean_subscriptions.py - Removes all subscriptions, filters, and listener destination instances in a server.

    • test_wbemcli_script.sh - A shell script that demos scripts.

  • Improved robustness and diagnostics in os_setup.py (issue #556).

Bug fixes:

  • Fixed the use of a variable before it was set in the remove_destinations() method of class WBEMSubscriptionManager.

  • Fixed a compatibility issue relative to pywbem 0.7.0, where the pywbem.Error class was no longer available in the pywbem.cim_http namespace. It has been made available in that namespace again, for compatibility reasons. Note that using sub-namespaces of the pywbem namespace such as pywbem.cim_http has been deprecated in pywbem 0.8.0 (issue #511).

  • Fixed an AttributeError in the remove_all_servers() method of WBEMSubscriptionManager and dictionary iteration errors in its remove_server() method (pr #583).

  • Fixed a TypeError in the TestClientRecorder operation recorder that occurred while handling a ConnectionError (this recorder is used by the –yamlfile option of run_cim_operations.py) (issue #587).

  • Fixed several errors in recorder on Python 3 (issue #531).

  • In wbemcli, several fixes in the short global functions (issue #548).

  • Fixed name of python devel package for Python 3.4 and 3.5.

  • Several changes, fixes and improvements on WBEMSubscriptionManager (issues #462, #540, #618, #619).

  • Added a check for unset URL target in recorder (issue #612).

  • Fixed access to None in recorder (issue #621)

Build, test, quality:

  • Added flake8 as an additional lint tool. It is executed with make check. Fixed all flake8 issues (issues #512, #520, #523, #533, #542, #560, #567, #575).

  • Changed names of the pylint and flake8 config files to match the default names defined for these utilities (pylintrc and .flak8) (issue #534).

  • Added CIM Schema archive to the repository, in order to avoid repeated downloads during testing in the CI systems (issue #49).

  • Added git as an OS-level dependency for development (it is used by GitPython when building the documentation) (pr #581).

  • Added wheel as a Python dependency for development. This package is not installed by default in some Linux distributions such as CentOS 7, and when installing into the system Python this becomes an issue (pr #622).

  • Added retry in setup script to handle xmlrpc failures when installing prerequisites from PyPI.

  • Fixed logic errors in pycmp compatibility checking tool.

  • Changed makefile to skip documentation build on Python 2.6 due to Sphinx having removed Python 2.6 support (issue #604).

  • Fixed UnboundLocalError for exc in setup.py (issue #545).

  • Added an executable run_enum_performance.py to the testsuite to test pull performance. It generates a table of the relative performance of EnumerateInstances vs. OpenEnumerateInstances / PullInstancesWithPath performance over a range of MaxObjectCount, response instance sizes, and total number of instances in the response.

  • Completed the test_client.py mock tests for all instance operations.

  • Improved the tests in run_cim_operations.py.


  • Added the global functions available in the wbemcli shell to the documentation (issue #602).

  • Improved usage information for the “Tutorial” section, to make usage of Jupyter tutorials more obvious (issue #470).

  • Added “Installation” and “Development” sections to the documentation, and moved some content from the “Introduction” section into a new “Appendix” section. Added an installation trouble shooting section to the appendix (pr #509).

  • Added a section “Prerequisite operating system packages” to the documentation that describes the prerequisite packages by distribution (pr #549).

  • Fixed a documentation build error on Python 2.6, by pinning the GitPython version to <=2.0.8, due to its use of unittest.case which is not available on Python 2.6 (issue #550).

  • Clarified the behavior for the default WBEMConnection timeout (None) (issue #628).

  • Fixed a documentation issue where the description of CIMError was not clear that the exception object itself can be accessed by index and slice (issue #511).

  • Added the wbemcli global functions to the documentation (issue #608).

13.30. pywbem 0.9.0

Released: 2016-09-06


  • Deprecated the use of the value instance variable and ctor parameter of the CIMParameter class, because that class represents CIM parameter declarations, which do not have a default value. Accessing this instance variable and specifying an initial value other than None now causes a DeprecationWarning to be issued.

  • Deprecated ordering comparisons for NocaseDict, CIMInstance, CIMInstanceName, and CIMClass objects. This affects the ordering comparisons between two such objects, not the ordering of the items within such a dictionary. Use of ordering operators on objects of these classes now causes a DeprecationWarning to be issued.

  • Deprecated the methodname input argument of CIMMethod(), and renamed it to name. methodname still works but its use causes a DeprecationWarning to be issued.

  • Deprecated the use of the verify_callback parameter of WBEMConnection. because it is not used with the Python ssl module and will probably be removed completely in the future. Its use now causes a DeprecationWarning to be issued. (Issue #297)

Known Issues:

  • Installing PyWBEM on Python 2.6 has a conflict with the pbr package from PyPI, resulting in a TypeError: “dist must be a Distribution instance”. This issue is specific to Python 2.6 and does not occur in any of the other supported Python versions (2.7, 3.4, 3.5). This issue can be mitigated by uninstalling the pbr package, or if that is not possible, by migrating to Python 2.7. See issue #26 on GitHub.

  • MOF using names that are reserved keywords will fail to compile in the MOF compiler. For example, a CIM property named ‘indication’. See issue #62 on GitHub.

Clean Code:

  • Moved the following unused modules from the pywbem package directory into a new attic directory, in order to clean up the pywbem package:

    • cim_provider.py

    • cim_provider2.py

    • cimxml_parse.py

    • test_cimxml_parse.py

    • twisted_client.py

  • Moved the script-related portions of the pywbem/mof_compiler.py module into the mof_compiler script.

  • Moved the complete pywbem/wbemcli.py module into the wbemcli script.

  • Removed half-baked code for HTTP proxy/tunneling support.


  • Implemented pull operations per DMTF specification DSP0200 and DSP0201. This includes the following new client operations to execute enumeration sequences:

    • OpenEnumerateInstances

    • OpenEnumerateInstancePaths

    • OpenAssociatorInstances

    • OpenAssociatorInstancePaths

    • OpenReferenceInstances

    • OpenReferenceInstancePaths

    • OpenQueryInstances

    • PullInstances

    • PullInstancesWithPath

    • PullInstancePaths

    • CloseEnumeration

    The EnumerationCount operation is NOT implemented, because it is both deprecated and unusable. (Issue #9)

    Unit tests of the pull operations are included and mock tests are written for at least some parts of the pull operations.

  • Implemented support for reading information from WBEM servers according to the DMTF WBEM Server Profile (DSP1071) and DMTF Profile Registration Profile (DSP1033) with a new WBEMServer class. Note that not everyhting in these profiles needs to be implemented in the WBEM server for this to work:

    • The WBEMServer class is a client’s view on a WBEM server and provides consistent and convenient access to the common elements of the server, including namespace names, interop namespace name, registered profile information, server branding, and central/scoping class algorithms.

    • Added unit tests for this new class in run_cim_operations.py and test_client.py.

    • Added a demo of the discovery abilities of the WBEMServer class in the examples/explore.py script.

    Experimental - This new class is experimental for pywbem 0.9.0 because this is the initial release of a significant change and subject to changes to the API.

    (Issues #9, #346, #468)

  • Implemented support for WBEM subscription management and a WBEM indication listener:

    • Added a WBEMListener class that allows the creation of a listener entity to receive indications.

    • Added a WBEMSubscriptionManager class that allows management of indication subscriptions, indication filters, and listener destination instances on the WBEM Server using the new WBEMServer class.

    • Added unit tests for these new classes and extended other existing tests accordingly, e.g. run_cim_operations.py.

    Experimental - These new classes are experimental for pywbem 0.9.0 because this is the initial release of a significant change and subject to changes to the API.

    (Issues #66, #421, #414, #379, #378)

  • The distribution formats released to PyPI have been extended. There are now:

    • Source archive (existed)

    • Universal wheel (new)

    (Issue #242)

  • Starting with pywbem 0.9.0, pywbem no longer stores the distribution archives in the repository, because the process for releasing to PyPI creates new distribution archives instead of using the created ones. This makes it difficult to ensure that the archives stored in the repository are the same.

  • Upgraded M2Crypto to use official 0.24.0 from PyPI.

  • Added check for minimum Python version 3.4 when running on Python 3. That requirement was already documented, now it is also enforced in the code.

  • Migrated API documentation to Sphinx.

  • Improved documentation of many classes of the external API.

  • Replaced [] and {} default arguments with None.

  • Changed the return value of repr() for WBEMConnection, CIM type classes (e.g. Sint8, CIMDateTime), and CIM object classes (e.g. CIMInstance) so that they now return all attributes in a reasonable order, and are suitable for debugging.

  • Clarified in the description of CIMClassName.__str__() and CIMInstanceName.__str__() that they return the WBEM URI representation of the class path and instance path.

  • Changed the return value of str() for CIM object classes (e.g. CIMProperty) so that they now return a short set of the most important attributes for human consumption. Specifically, this resulted in the following changes:

    • For CIMProperty, reduced the complete set of attributes to a short set.

    • For CIMQualifierDeclaration, added the attribute value.

  • Changes in the CIMError exception class:

    • Changed the behavior of the __str__() method to return a human readable string containing the symbolic name of the status code, and the status description. The previous behavior was to return a Python representation of the tuple status code, status description.

    • Added properties status_code (numeric CIM status code), status_code_name (symbolic name of CIM status code), and status_description (CIM status description).

    • Updated the documentation to no longer show the unused third tuple element exception_obj. It was never created, so this is only a doc change.

  • Added CIM status codes 20 to 28, specifically to support the pull operations.

  • Changed the ParseError exception to be derived from the Error base exception, so that now all pywbem specific exceptions are derived from Error.

  • Added tocimxmlstr() as a global function and as methods on all CIM object classes. It returns the CIM-XML representation of the object as a unicode string either in a single-line variant, or in a prettified multi-line variant.

  • Created tomof() for CIMProperty making common functionality available to both class and instance tomof() (PR #151)

  • Added an optional namespace parameter to the WBEMConnection.CreateInstance() method, for consistency with other methods, and to have an explicit alternative to the namespace in the path component of the NewInstance parameter.

  • The ClassName parameter of several operation methods can be specified as both a string and a CIMClassName object. In the latter case, a namespace in that object was ignored so far. Now, it is honored. This affects the following WBEMConnection methods: EnumerateInstanceNames, EnumerateInstances, EnumerateClassNames, EnumerateClasses, GetClass, DeleteClass.

  • Enhanced the CIM integer data types (e.g. pywbem.Uint8()) to accept all input parameters that are supported by int().

  • Added the concept of a valid value range for the CIM integer data types, that is enforced at construction time. For compatibility, this strict checking can be turned off via a config variable: pywbem.config.ENFORCE_INTEGER_RANGE = False.

  • Extended wbemcli arguments to include all possible arguments that would be logical for a ssl or non-ssl client. This included arguments for ca certificates, client keys and certificates, timeout. It also modifies the server argument to use http:// or https:// prefix and suffix with :<port number> and drops the old arguments of –port and –no-ssl

  • Improved Swig installation code by reinstalling Swig if it was installed but still cannot be found in PATH (e.g. if the installation was tampered with).

  • Removed dependency on git (this was a leftover from when M2Crypto needed to be obtained from its development repo).

  • Added debug prints for two probably legitimate situations where socket errors are ignored when the server closes or resets the connection. These debug prints can be enabled via the debug instance variable of the WBEMConnection object; they are targeted at development for investigating these situations.

  • Extended run_cim_operations.py which is a live test against a server. It has only been tested against OpenPegasus but was extended to cover more details on more of the operation types and to create a test subclass to specifically test against OpenPegasus if OpenPegasus is detected as the server.

  • Added description of supported authentication types in WBEM client API.

  • Allowed tuple as input for PropertyList parameter of WBEMConnection operation methods. Documentation indicated that iterable was allowed but was limited to list. (Issue #347)

  • Added a tutorial section to the generated documentation, using Jupyter Notebooks for each tutorial page. (Issue #324)

  • Added the concept of operation recording on WBEM connections, that supports user-written operation recorders e.g. for tracing purposes. Added an operation recorder that generates test cases for the test_client unit test module. (Issue #351)

  • Extended wbemcli for all pull operations. (Issue #341)

  • Changed command line options of mof_compiler command to be consistent with wbemcli, and added support for specifying certificate related options. use of the old options is checked and causes an according error message to be displayed. Note, this is an incompatible change in the command line options. (Issue #216)

  • Cleaned up exception handling in WBEMConnection methods: Authentication errors are now always raised as pywbem.AuthError (OpenWBEM raised pywbem.ConnectionError in one case), and any other bad HTTP responses are now raised as a new exception pywbem.HTTPError.

  • Clarified MofParseError by defining attributes as part of the class init and moving some code from productions to the class itself (Issue #169). This makes the MofParseError exception more suitable for use from the productions themselves. The original definition was really only for use as a call from ply. Add tests for invalid qualifier flavors to unit tests and add test in mof_compiler.py for conflicting flavors ex. tosubclass and restricted in the same definition. This test uses the new MofParseError. (Issue #204)

  • Extended PropertyList argument in request operations to be either list or tuple. (Issue #347)

  • Added support for representing control characters in MOF strings using MOF escape sequences, e.g. U+0001 becomes “x0001”.

  • Modified qualifier MOF output to stay within 80 column limits. (Issue #35)

Bug fixes:

  • Fixed KeyError when iterating over CIMInstance and CIMInstanceName objects.

  • Fixed bug that MOF escape sequences in strings were passed through unchanged, into generated MOF, by removing needless special-casing code.

  • Fixed bug with class MOF generation where output was not including array indicator ([]). (Issue #233)

  • Moved class property MOF output processing to CIMProperty and fixed issue where default values were not being generated. (Issues #223 and #231)

  • Fixed bug in method MOF output where array flag “[]” was left off array parameters.

  • In the WBEMConnection.ModifyInstance() method, the class names in the instance and path component of the ModifiedInstance parameter are required, but that was neither described nor checked. It is now described and checked.

  • In the WBEMConnection.ModifyInstance() method, a host that was specified in the path component of the ModifiedInstance parameter incorrectly caused an INSTANCEPATH element to be created in the CIM-XML. This bug was fixed, and a host is now ignored.

  • Fixed a bug where the CIM datetime string returned by the str() function on CIMDateTime interval objects contained incorrect values for the minutes and seconds fields on Python 3. (Issue #275).

  • Fixed an IndexError in cim_http.wbem_request() that occurred during handling of another exception.

  • Fixed issue with Python 3 and https that was causing connect() to fail. This completely separates connect() code for Python 3 ssl module from Python 2 M2Crypto.

  • Fixed problem that wbemcli in Python 3 when used without existing history file would fail with “TypeError: ‘FileNotFoundError’ object is not subscriptable”. (Issue #302)

  • Fixed issue with tomof() output where datetime values were not quoted. (Issue #289)

  • Eliminated automatic setting of toinstance flavor in mof_compiler when tosubclass is set. Also enabled use of toinstance flavor if defined in a class or qualifier declaration. (Issue #193)

  • Fixed problem in class-level associator operations that namespace was classname when classname was passed as a string. (Issue #322)

  • Fixed hole in checking where class CIMMethod allowed None as a return_type. (Issue #264)

  • Fixed a documentation issue with associators/references return types. It was documented as a list of classes for class level return, but it actually is a list of tuples of classname, class. (Issue #339)

  • Created a common function for setting SSL defaults and tried to create the same level of defaults for both Python2 (M2Crypto) and Python 3 (SSL module). The minimum level protocol set by the client is TLSV1 now whereas in previous versions of pywbem it was SSLV23. (Issue #295)

  • Fixed issue where mof_compiler was setting values for compile of instances into the class object and also setting the values for the last compiled instance in a compile unit into all other compiled instances for the same class. Since the concept of compiling a path into compiled instances is flawed (there is no requirement to include all properties into a instance to compile that code was removed so that the path is NOT build into a compiled instance. Finally the qualifiers from the class were also included in compiled instances which was incorrect and an accident of the code. They are no longer included into the compiled instances.) (Issue #402)

  • Fixed description in INSTALL.md to correctly describe how to establish OS-level prerequisites.

  • Cleaned up the timeouts on SSL and created specific tests for timeouts against a live server. (Issues #363, #364)

13.31. pywbem 0.8.4

Released: 2016-05-13

Bug fixes:

  • Fixed an IndexError in cim_http.wbem_request() that occurred during handling of another exception.

  • Fixed problem that wbemcli in Python 3 when used without existing history file would fail with “TypeError: ‘FileNotFoundError’ object is not subscriptable” (issue #302).

  • Fixed issues with Python 3 and HTTPS that were causing the connecttion to fail. This completely separates the connect() code for Python 3 (using the Python SSL module) from the code for Python 2 (using M2Crypto) (issues #150, #273, #274, #288).


  • Improved description in INSTALL.md to better describe how to establish OS-level prerequisites.

  • Improved Swig installation code by reinstalling Swig if it was installed but still cannot be found in PATH (e.g. if the installation was tampered with).

  • Removed dependency on git (this was a leftover from when M2Crypto needed to be obtained from its development repo).

  • Added debug prints for two probably legitimate situations where socket errors are ignored when the server closes or resets the connection. These debug prints can be enabled via the debug instance variable of the WBEMConnection object; they are targeted at development for investigating these situations.

  • Added check for minimum Python version 3.4 when running on Python 3. That requirement was already documented, now it is also enforced in the code.

  • Enhanced the wbemcli script with options supporting certificates. For details, invoke with –help, or look at the online documentation. NOTE: The –no-ssl and –port options have been removed. Specify the protocol and port number in the server URL.

Clean code:

  • Removed half-baked code for HTTP proxy/tunneling support.

13.32. pywbem 0.8.3

Released: 2016-04-15

Bug fixes:

  • To address some M2Crypto issues, upgraded to use M2Crypto >=0.24 from PyPI.

  • For Windows, using M2CryptoWin32/64 >=0.21 from PyPI, in order to avoid the Swig-based build in Windows.

  • Improved the mechanism to build the LEX/YACC table modules, so that import errors for freshly installed packages (e.g. M2Crypto) no longer occur.


  • Added Windows versions of WBEM utility commands: wbemcli.bat, mof_compiler.bat.

13.33. pywbem 0.8.2

Released: 2016-03-20

Bug fixes:

  • Eliminated dependency on six package during installation of pywbem. (Andreas Maier)


  • Pywbem 0.8.x has the following dependencies on other PyPI packages (see install_requires argument in setup script):

    • M2Crypto

    • ply

    • six

13.34. pywbem 0.8.1

Released: 2016-03-18

Known Issues:

  • Installing PyWBEM on Python 2.6 has a conflict with the pbr package from PyPI, resulting in a TypeError: “dist must be a Distribution instance”. This issue is specific to Python 2.6 and does not occur in any of the other supported Python versions (2.7, 3.4, 3.5). This issue can be mitigated by uninstalling the pbr package, or if that is not possible, by migrating to Python 2.7. See issue #26 on GitHub.

  • MOF using names that are reserved keywords will fail to compile in the MOF compiler. For example, a CIM property named ‘indication’. See issue #62 on GitHub.

  • The Pulled Enumeration Operations introduced in DSP0200 1.3 are not supported in this release. See issue #9 on GitHub.

  • Note that some components of this PyWBEM Client package are still considered experimental:

    • The twisted client module twisted_client.py.

    • The Python provider modules cim_provider.py and cim_provider2.py.

    • The CIM indication listener in the irecv directory. See issue #66 on GitHub.


  • The MOF compiler is now available as the command ‘mof_compiler’ that gets installed into the Python script directory. It is now separate from the ‘mof_compiler’ module within the ‘pywbem’ package. In pywbem 0.7.0, the module was at the same time the script. (Andreas Maier)

  • The WBEM client CLI is now available as the command ‘wbemcli’ that gets installed into the Python script directory. It is now separate from the ‘wbemcli’ module within the ‘pywbem’ package. In pywbem 0.7.0, the module was at the same time the script. (Andreas Maier)

  • In pywbem 0.7.0, most symbols defined in the sub-modules of the ‘pywbem’ package were folded into the ‘pywbem’ package namespace, cluttering it significantly. The symbols in the ‘pywbem’ package namespace have been reduced to a well-defined set that is now declared the external API of the WBEM client library, and is supposed to be sufficient. If you find that you need something you were used to, please think twice as to whether that makes sense to be part of the external PyWBEM API, and if so, let us know by opening an issue.

  • Since pywbem 0.7.0, some exceptions that can be raised at the external API of the WBEM client library have been cleaned up.


  • Verify certificates against platform provided CA trust store in /etc/pki/tls/certs. Linux only. (Peter Hatina)

  • Added ‘-d’ option to MOF compiler that causes the compiler to perform a dry-run and just check the MOF file syntax. This allows to more easily detect included MOF files when used together with the ‘-v’ option. (Jan Safranek)

  • Added support for non-ASCII (Unicode) characters. (Michal Minar, Andreas Maier)

  • Improved information in the message text of some exceptions (TypeError and KeyError in cim_obj.py, ValueError in cim_obj.py, and ParseError in tupleparse.py). (Andreas Maier)

  • Moved the definition of the pywbem version from setup.py to __init__.py, in order to make it available to programs using pywbem as pywbem.__version__. (Andreas Maier)

  • Added support for direct iteration over NocaseDict objects using for and in by adding __iter__(), e.g. for use with CIMInstance.properties. (Andreas Maier)

  • Added more instance attributes to be shown in repr() on CIMProperty and other classes in cim_obj. (Andreas Maier)

  • Added and improved docstring-based documentation in the pywbem modules cim_operations, cim_http, cim_obj, cim_types, and the pywbem module. (Andreas Maier)

  • Improved the way missing file:// URL support on Windows is handled, by now issuing a proper error message instead of stumbling across the missing socket.AF_UNIX constant. (Andreas Maier)

  • Improved the way missing OWLocal authorization with the OpenWBEM server is handled on Windows, by now issuing a proper error message instead of stumbling across the missing os.getuid() function. (Andreas Maier)

  • Improved Windows portability by no longer attempting to import pwd in case the userid is not set in the environment variables that are checked when the WBEM server is local. (Andreas Maier)

  • Added support for ExecQuery operation to twisted client. (Robert Booth)

  • Added get() methods on CIMInstance and CIMInstanceName to step up to the statement that they behave like dictionaries w.r.t. properties and key bindings. (Andreas Maier)

  • Improved help text of test_cim_operations.py test program. (Andreas Maier)

  • Added an optional Params argument to InvokeMethod(), that is an ordered list of CIM input parameters, that preserves its order in the CIM-XML request message. This is to accomodate deficient WBEM servers that do not tolerate arbitrary order of method input parameters as required by the standard. The new argument is optional, making this a backwards compatible change of InvokeMethod(). (Andreas Maier)

  • Cleaned up the public symbols of each module by making symbols private that are used only internally. Specifically, the following symbols have been made private: In cimxml_parse: _get_required_attribute, _get_attribute, _get_end_event, _is_start, _is_end. In cim_xml: _text (was: Text). (Andreas Maier)

  • Cleaned up symbols imported by wildcard import by defining __all__ in each module with only the public symbols defined in that module (removing any symbols imported into the module), except for the following modules which define less than the complete set of public symbols in their __all__: mof_compiler, twisted_client, tupleparse, cimxml_parse, cim_http. (Andreas Maier)

  • Added support for using CDATA section based escaping in any requests sent to the WBEM server. The default is still XML entity reference based escaping, the CDATA based escaping can be turned on by setting the switch _CDATA_ESCAPING accordingly, which is a global variable in the cim_xml module. (Andreas Maier)

  • Simplified the exceptions that can be raised by WBEMConnection methods, and improved the information in the exception messages. See description of WBEMConnection class for details. (Andreas Maier)

  • Added support for timeouts to WBEMConnection, via a new timeout argument, that defaults to no timeout. (This finally increased the minimum version of Python to 2.6. (Andreas Maier)

  • Improved installation process of PyWBEM, particularly related to M2Crypto. (Andreas Maier)

  • Added support for Python 3. Issue #3 on GitHub. (Ross Peoples, Andreas Maier)

Bug fixes:

  • Fix syntax error in CIM DTDVERSION error path. Allow KEYVALUE VALUETYPE attribute to be optional as specified in the DTD. (Andreas Linke)

  • Added parsing of InvokeMethod return value and output parameters for Twisted Python client. (Tim Potter)

  • Fixed cim_provider2.py to properly support shutdown() and can_unload() (called from CMPI cleanup() functions). Support was recently added to cmpi-bindings for this. (Bart Whiteley)

  • Fixed XML parsing to accept SFCB-style embedded instance parameters. (Mihai Ibanescu)

  • Use getpass module instead of pwd to detect local user to fix Win32. (Tim Potter)

  • Re-throw KeyError exceptions with capitalised key string instead of lower cased version in NocaseDict.__getitem__(). (Tim Potter)

  • Use base64.b64encode() instead of base64.encodestring() in Twisted client. (Mihai Ibanescu)

  • Fix missing CIMDateTime import in Twisted client. (Mihai Ibanescu)

  • Fixed CIMInstanceName rendering to string. It is now possible to pass the rendered string value as an instance path argument of a CIM method. (Jan Safranek, Michal Minar)

  • For Python providers, fixed the comparsion of the Role parameter in association operations to be case insensitive, and removed an erroneous test that raised an exception when the property specified in the Role parameter was not also in the property list specified by the Properties parameter. (Jan Safranek)

  • For Python providers, converted debug ‘print’ statements to trace messages that end up in the system log. (Jan Safranek)

  • The CIM-XML parser no longer throws an exception when parsing a qualifier declaration. Note: The CIM-XML supported by this fix does not conform to DSP0201 so far. Further fixes are pending. (Jan Safranek)

  • Fixed parsing errors for connection URLs with IPv6 addresses, including zone indexes (aka scope IDs). (Peter Hatina, Andreas Maier)

  • Fixed the hard coded socket addressing family used for HTTPS that was incorrect in some IPv6 cases, by determining it dynamically. (Peter Hatina)

  • Fixed the list of output parameters of extrinsic method calls to be returned as a case insensitive dictionary (using cim_obj.NocaseDict). (Jan Safranek)

  • Fixed the checking of CIMVERSION attributes in CIM-XML to only verify the major version, consistent with DSP0201 (see subclause 5.2.1, in DSP0201 version 2.3.1). (Jan Safranek)

  • Fixed error in cim_http.py related to stronger type checking of Python 2.7. (Eduardo de Barros Lima)

  • Removed erroneous qualifier scopes SCHEMA and QUALIFIER from the MOF compiler (see DSP0004). (Andreas Maier)

  • Fixed debug logging of CIM-XML payload (that is, conn.last_*request/reply attributes) for extrinsic method calls, to now be consistent with intrinsic method calls. (Andreas Maier)

  • Fixed TOCTOU (time-of-check-time-of-use) error when validating peer’s certificate. (Michal Minar)

  • Added a check in the CIMInstanceName constructor that the classname argument is not None. (Andreas Maier)

  • Fixed the issue in the CIMProperty constructor that specifying a tuple for the value argument was incorrectly detected to be a scalar (and not an array). (Andreas Maier)

  • Fixed the issue in the CIMProperty constructor that specifying a datetime or timedelta typed value resulted in storing the provided object in the value attribute, instead of converting it to a CIMDateTime object. (Andreas Maier)

  • Fixed the issue in the CIMProperty constructor that specifying a datetime formatted string typed value argument along with type=’datetime’ resulted in storing the provided string object in the value attribute, instead of converting it to a CIMDateTime object. (Andreas Maier)

  • Fixed several cases in the CIMProperty constructor of unnecessarily requiring the optional arguments type, is_array, embedded_object, or reference_class. These optional arguments are now only necessary to be provided if they cannot be implied from provided arguments (mainly from value). (Andreas Maier)

  • Fixed the issue in the CIMProperty constructor that an embedded_object argument value of ‘object’ was changed to ‘instance’ when a CIMInstance typed value argument was also provided. (Andreas Maier)

  • Fixed the issue in the CIMProperty constructor that the first array element was used for defaulting the type attribute, without checking that for None, causing an exception to be raised in this case. (Andreas Maier)

  • Added a check in the CIMProperty constructor that the name argument is not None. (Andreas Maier)

  • Fixed the issue that the CIMProperty constructor raised only TypeError even when the issue was not about types; it now raises in addition ValueError. (Andreas Maier)

  • Changed the exception that is raised in NocaseDict.__setitem__() for invalid key types, to be TypeError in instead of KeyError. Updated the testcases accordingly. (Andreas Maier)

  • Added checks for more than one argument and for unsupported argument types to the constructor of NocaseDict. (Andreas Maier)

  • Fixed incorrectly labeled namespace variables in twisted client. (Robert Booth)

  • Fixed that WBEMConnection.last_raw_reply was not set to the current reply in case of parsing errors in the reply. (Andreas Maier)

  • Reintroduced Python 2.6 support in cim_http.HTTPSConnection.connect() that disappeared in early drafts of this version: (Andreas Maier)

    • Removed SSLTimeoutError from except list; being a subclass of SSLError, it is catched via SSLError.

    • Invoked socket.create_connection() without source_address, if running on Python 2.6.

  • Fixed bug where HTTP body was attempted ot be read when CIMError header is set, causing a hang. (Andreas Maier)

  • Added CIM-XML declaration support for alternative PyWBEM client based on twisted. (Andreas Maier)

  • Added support for Windows to wbemcli.py, by making dependency on HOME environment variable optional, and adding HOMEPATH environment variable. Also, cleaned up the global namespace of wbemcli.py and made it importable as a module. (Andreas Maier)

  • Fixed errors in generated MOF (e.g. in any tomof() methods): (Andreas Maier)

    • Missing backslash escaping within string literals for n, r, t, ".

    • Representation of REF types was incorrect.

    • ‘=’ in array-typed qualifier declarations was missing.

    • Fixed size indicator was missing in array elements.

    • Qualifiers of method parameters were missing.

  • Improvements in generated MOF: (Andreas Maier)

    • Changed order of qualifiers to be sorted by qualifier name.

    • Added empty line before each property and method in the class for better readability.

    • Method parameters are now placed on separate lines.

    • Moved generation of method qualifiers from class into method. This changes the behavior of CIMMethod.tomof() to now generate the method qualifiers.

  • Fixed error where invoking mof_compiler.py with a file based URL that did not start with ‘file:’ failed with an undefined variable url_ in cim_http.py. Issue #1 on GitHub. (Klaus Kaempf, Andreas Maier)

  • Fixed build error that raised a YaccError in mof_compiler.py: “Syntax error. Expected ‘:’”. Issue #2 on GitHub. (Andreas Maier)

  • Fixed issue where MOF compiler did not find include files with a path specified. Issue #4 on GitHub. (Karl Schopmeyer)

  • Added missing LocalOnly parameter to EnumerateInstances() of the wbemcli script. Issue #33 on GitHub. (Karl Schopmeyer)

  • Added workaround for Python 2.6 for Python issue 15881.

  • Removed the lex.py and yacc.py files from PyWBEM, and used them from the ply package, which is their real home. This fixes a number of issues because the latest version is now used. Issue #8 on GitHub.i (Karl Schopmeyer)

  • Fixed the issue that the LEX and YACC table modules were regenerated under certain conditions. Issue #55 on GitHub. (Karl Schopmeyer)

  • Fixed bugs in the mof_compiler script. (Karl Schopmeyer)

  • Fixed errors in the description of the qualifier operations in WBEMConnection. Issue #91 on GitHub. (Andreas Maier)


  • Added support for running the unit test cases without having to be in the testsuite directory. This was done by setting up the DTD_FILE path correctly for any XML tests. (Andreas Maier)

  • Improved the quality of assertion messages issued when testcases fail, to include context information and types. (Andreas Maier)

  • Added docstrings to test cases. (Andreas Maier)

  • Added testcases for CIMProperty.__init__() to be comprehensive. (Andreas Maier)

  • In XML validation tests, added the expected XML root element. (Andreas Maier)

  • Added a header to any error messages issued by xmllint. (Andreas Maier)

  • Fix: Merged stderr into stdout for the xmllint invocation, xmllint error messages go to stderr and had been dropped before. (Andreas Maier)

  • Fix: The “mkdir -p ..:” command in the comfychair testcase constructor created subdirectories named “-p” when running on Windows; replaced that command with os.makedirs(). (Andreas Maier)

  • Fix: Replaced the “rm -fr …” command in the comfychair testcase constructor with shutil.rmtree(), in order to better run on Windows. (Andreas Maier)

  • Fix: In comfychair._enter_rundir(), moved registration of cleanup function _restore_directory() to the end, so cleanup happens only if no errors happened. (Andreas Maier)

  • Fixed a bug in pywbem/trunk/testsuite/test_tupleparse.py in function ParseCIMProperty.runtest(), where the use of real tab characters caused a few lines to be incorrectly indented, and as a result, ignored for the test. (Andreas Maier)

  • Improved Windows portability in testsuite: Moved from using the Unix-only functions posix.WIFSIGNALED() and posix.WEXITSTATUS() for testing the success of subprocess.wait(), to simply testing for 0. (Andreas Maier)

  • Added ability to invoke test_cim_operations.py with comfychair arguments, and added printing of exception information if an operation fails. (Andreas Maier)

  • Migrated from comfychair to py.test, standard Python unittest, and to tox. (Andreas Maier)

  • Added test_client.py with a few initial testcases. This is an end-to-end test concept that allows specifying test cases that cover the entire PyWBEM Client top to bottom. It mocks the socket layer and allows specifying the test cases in YAML, starting with input at the PyWBEM Client API (e.g. an operation and its parameters), the expected CIM-XML request at the socket payload level resulting from this input (the request is verified), the CIM-XML response that is to be generated, and finally an expected result at the PyWBEM Client API that is being verified. (Andreas Maier)

  • Added use of Travis CI test environment. Commits to GitHub now trigger test runs on the Travis CI. A badge on the GitHub README page shows the current test result of the master branch, and links to the Travis site for the test results of the branches of any pull requests. (Andreas Maier)

  • Added support for reporting test coverage, using the Python ‘coverage’ package. Coverage is reported on stdout as part of testing, e.g. with ‘make test’ for the current Python environment, or with ‘tox’ for all supported Python environments. (Andreas Maier)

  • Added multiple tests for client connection timeout. A mock test was added for both HTTP and HTTPs. However, this causes an error in python 2 with HTTPS so two new options were added to test_client.py. First, a new parameter ignore_python_version was added to the yaml to define a major version of python for which a particulare testcase would be ignored. Second a non-documente option was added to test_client.py to execute a single testcase if the name of that testcase is the only parameter on the test_client.py cmd line. Finally a whole new run_operationtimeout.py file was added to testsuite to throughly test for timeouts. This runs ONLY against particular versions of OpenPegasus because it required adding a new method to OpenPegasus. However, it established that the timeouts apparently now really do work in both python 2 and python 3 with both http and https. (see issue #363)

Clean Code:

  • Removed dangerous default parameter {} from CIMProperty and CIMInstanceName, and replaced it with None. To support that, added support for initializing an empty NocaseDict object from None. (Andreas Maier)

  • In cim_obj, changed the use of the deprecated backticks to using %r in the format string (which produces the same result). (Andreas Maier)

  • In the constructor of CIMInstanceName, added assertions to some paths that cannot possibly be taken based on the fact that the keybindings attribute is always a NocaseDict. They should be removed at some point. (Andreas Maier)

  • Addressed PyLint issues: (Andreas Maier, Karl Schopmeyer)

    • Consolidated imports at the top of the module (after module docstring), consistent with the PEP-8 recommendation.

    • Ensured order of imports: standard, non-standard, pywbem, local (on a subset of modules only).

    • Replaced wildcard imports with specific imports, as much as possible.

    • Removed unused imports.

    • Addressed PyLint issues that are related to whitespace, continuation indentation, and line length.

    • Replaced all real tab characters with spaces.

    • Many more PyLint issues

Packaging / Build:

  • Fixed grammatical funkiness in the license text. No change to actual license - still LGPLv2. (Tim Potter)

  • Added LICENSE.txt file to release. (Tim Potter)

  • Added LICENSE.txt, NEWS, README and INSTALL files to distribution archive. (Andreas Maier)

  • Fixed inconsistencies in license text in file headers to consistently say LGPL 2.1 or higher (The LICENSE.txt file has always been LGPL 2.1). (Andreas Maier)

  • Removed confusing section about build from INSTALL file, to scope it just to the topic of installation. (Andreas Maier)

  • Restructured pywbem/trunk subtree to move pywbem package files into a pywbem subdirectory. (Andreas Maier)

  • Added a makefile (invoke ‘make help’ for valid targets). (Andreas Maier)

  • Added support for checking the Python source code using PyLint. (Andreas Maier)

  • Added support for generating HTML documentation using epydoc, and included the documentation into the distribution archive. The syntax used in Python docstrings is reStructuredText markdown. (Andreas Maier)

  • Added support for installing OS-level prerequisites via the new setup.py script commands ‘install_os’ and ‘develop_os’. (Andreas Maier)

  • Added support for installing Python-level prerequisites when installing in development mode using the setup.py script command ‘develop’. (Andreas Maier)

13.35. pywbem 0.7.0

Released: 2008-12-12

Bug fixes:

  • Fixed enumInstances and references in cim_provider to do a deep copy of the model before filtering instances so provider writers are less surprised. (Bart Whiteley)

  • Added CIMDateTime.__cmp__() so that CIMDateTime instances can be compared. (Bart Whiteley)

  • Fixed data types of method return values for python providers. (Bart Whiteley)

  • Fixed REF array out parameters in tupleparse.py. (Bart Whiteley)

  • Fixed Array parameters with no elements. (Bart Whiteley)

  • Fixed precision for real32 and real64 types. (Bart Whiteley)

  • Fixed Array properties where is_array isn’t set in __init__. (Bart Whiteley)

  • Added NocaseDict.__cmp__(self, other). (Bart Whiteley)

  • Fixed WBEMConnection.__repr__ for anonymous connections. (Tim Potter)

  • Fixed XML encoding of CIMQualifierDeclarations. (Bart Whiteley)

  • Fixed EnumerateQualifiers if there are no qualifiers. (Bart Whiteley)

  • Fixed InvokeMethod to only send a LOCALCLASSPATH or LOCALINSTANCEPATH, not a CLASSPATH or INSTANCEPATH. (Bart Whiteley)

  • Fix unexpected line break in basic auth header for long credentials. (Daniel Hiltgen)

  • Fix Host: HTTP header when connecting to a unix domain socket. (Bart Whiteley)

  • Fix deprecation warnings with Python 2.6. (Bart Whiteley)


  • Added support for generating Pegasus provider registration MOF in cim_provider.codegen(). (Bart Whiteley)

  • Implemented methods to parse indication export requests. (Bart Whiteley)

  • Python provider code generation enhancements. (Bart Whiteley)

  • Support for Pegasus Local authentication. (Bart Whiteley)

  • Support for Pegasus and OpenWBEM Unix Domain Socket. (Tim and Bart)

  • Added support for Pegasus non-compliant EMBEDDEDOBJECT XML attribute. (Bart Whiteley)

  • Added CIMQualifierDeclaration.tomof(). (Bart Whiteley)

  • Added a powerful MOF compiler. (Bart Whiteley)

  • Added property filtering to CIMInstance. (Bart Whiteley)

  • Added value attribute to CIMParameter. (Bart Whiteley)

  • Rigged CIMInstance to automagically update CIMInstance.path.keybindings as key properties are set. (Bart Whiteley)

  • Added cim_provider2.py: A new provider interface. Python providers using this interface can use the cmpi-bindings project within OMC (https://omc-project.org/) to run under any CIMOM supporting the CMPI interface. This is prefered to the old cim_provider.py interface that was used with the Python Provider Managers for OpenWBEM and Pegasus.

  • Changed __init__.py to not import anything from cim_provider.py (or cim_provider2.py) into the pywbem namespace. Existing providers based on cim_provider.py can still work with a minor adjustment involving importing CIMProvider from pywbem.cim_provider. The codegen funtion can now be obtained with from pywbem.cim_provider import codegen, or from pywbem.cim_provider2 import codegen or similar.

  • Added wbemcli.py command line utility. (Tim Potter)

  • Pass keyword args in unix domain socket connection functions down to WBEMConnection(). (Tim Potter)

13.36. pywbem 0.6

Released: 2007-10-26 (not on Pypi)


  • Relicensed from the GNU GPLv2 to the GNU LGPLv2.

API Changes:

  • Add a type keyword arg and attribute to CIMQualifier, similar to the CIMProperty object, to allow the creation of null qualifiers. (Tim Potter)

  • Remove the toxml() method from CIM object classes. Use tocimxml().toxml() instead which specifies the CIM-XML representation of the object. (Tim Potter)

  • CIMDateTime class should now be used instead of datetime.datetime and datetime.timedelta.

  • Added a new method, CIMInstance.update_existing(). This behaves like update() on a dict, but only assigns new values to existing properties. It skips values for properties not already present in the instance. This is useful for honoring PropertyList within python providers.

Bug fixes:

  • Explicitly specify charset=”utf-8” in HTTP Content-type header as this is required now by the Pegasus cimserver. (Tim Potter)

  • Parse VALUETYPE elements that contain a TYPE attribute. This feature was introduced in version 2.2 of the CIM-XML DTD and produced by some CIMOMs such as the Java WBEM Server. (Tim Potter)

  • Don’t require CreateInstance to have the path attribute set but if it is, use the namespace from it. (Tim Potter)

  • Allow extrinsic methods to return object references. (Tim Potter)

  • Fix CIMInstanceName to support more numeric types of keybindings. (Bart Whiteley)

  • Fix datetime values to support utc offset. (Bart Whiteley)

  • Fix http client to monitor the connection more closely (RFC 2616 section 8.2.2). Previously, a large request could cause a socket exception with no ability to read the response and respond to an authentication challenge.

  • Fix NULL qualifiers to have a (required) type. (Martin Mrazik)

  • Fix initialising CIMInstanceName keys from a NocaseDict. (Bart Whiteley)

  • Return correct namespace in path for return value from GetInstance. (Tim Potter)

  • Numerous bugfixes to Twisted Python client. (Tim Potter)

  • Fix for x.509 SSL certificate handling. (Bas ten Berge)

  • EnumerateClassNames() now returns an empty list instead of None if there are no classes. (Bart Whiteley)


  • Support for OpenWBEM password-less local authentication. (Bart Whiteley)

  • Support for embedded objects is described in DSP0201-2.2.0 (Bart Whiteley)

  • New CIMDateTime class to deal with CIM-isms of datetimes. Most notably, datetime deals with timezone info poorly. (Bart Whiteley)

  • Add InvokeMethod() support in Twisted Python client. (Tim Potter)

13.37. pywbem 0.5

Released: 2006-11-21 (not on Pypi)

API Changes:

  • Many API changes were made to simplify the function and object interface of PyWBEM. Aspects of just about every CIM operation call and CIM object have changed. The major changes are:

    • The “LocalNamespacePath” keyword argument has been renamed to simply “namespace” for all CIM operations.

    • Replaced all object location classes with CIMInstanceName, and all instance classes with CIMInstance. CIMInstanceName now has “host” and “namespace” attributes to fully name a reference to an instance. The CIMInstance class now has a “path” attribute which is of type CIMInstanceName.

    • EnumerateInstances() now returns a list of CIMInstance objects (with path attribute set) instead of a list of CIMNamedInstance or tuples of (CIMInstanceName, CIMInstance).

    • All representations of properties can now be represented with the CIMProperty class.

  • All classes now have a copy() method which return a deep copy of the object. PyWBEM makes extensive use of dictionary objects which are passed by reference in Python. Use the copy() method to create and manipulate objects without modifying them by accident.

Bug fixes:

  • Fix parse bug when a CIMInstanceName is passed as the localobject parameter to WBEMConnection.InvokeMethod().

  • Fix parsing of INSTANCE elements containing PROPERTY.REFERENCE elements bug found by Bart Whiteley. This turns up when processing associations. (Tim Potter)

  • Handle extrinsic method calls that don’t return a value or any output parameters. (Tim Potter)

  • Fixed parsing of PARAMETER.ARRAY and PARAMETER.REFARRAY to not require optional attrs. (Bart Whiteley)

  • Atomic_to_cim_xml string generation for a datetime - was missing a >> ‘.’ in the string. (Norm Paxton)

  • InvokeMethod did not provide for None in output parameters. (Norm Paxton)


  • More parts of the class provider interface have been implemented. (Tim Potter, Bart Whiteley)

  • Many case-sensitivity bugs, mostly in __cmp__ methods, were found and fixed. (Tim Potter)

  • Implemented a test suite for maintaining backward compatibility and testing new features. (Tim Potter)

  • Implemented ExecQuery. (Bart Whiteley)

  • Allow a string classname to be passed as the localobject parameter to WBEMConnection.InvokeMethod(). (Tim Potter)

  • Add missing qualifiers on array properties. (Bart Whiteley)

  • Added code for performing asynchronous WBEM client operations using the Twisted Python framework. (Tim Potter)

  • Allow extrinsic method calls that take parameters. (Tim Potter)

  • Added cim_http.AuthError exception class. This is raised if the CIMOM returns a 401 (Unauthorized). Now the client can distinguish this condition, and (re)prompt for credentials. (Bart Whiteley)

  • Created cim_obj.CIMParameter class. Added return type, class origin, propagated to CIMMethod. CIMParameter object now allows parameter types and qualifiers to be obtained. (Bart Whiteley)

  • Implemented case-insensitive keys for property and qualifier dictionaries, as per the CIM specification. (Tim Potter, Bart Whitely)

13.38. pywbem 0.4

Released: 2005-11-15 (not on Pypi)

Bug fixes:

  • Correctly calculate value of Content-Length HTTP header to include opening XML stanza. (Szalai Ferenc)

  • Fix syntax error when re-raising socket errors. (Pat Knight)


  • Support for marshaling and unmarshaling CIM dates object into Python datetime objects. (Szalai Ferenc)

  • Experimental module for making asynchronous WBEM calls with PyWBEM in Twisted Python. (Tim Potter)

  • Add parameter type checking for object location classes. (Tim Potter)

  • Allow caller to pass in a dictionary containing the location of the SSL certificate and key files as per the httplib.HTTPSConnection() class constructor. (Pat Knight)

API Changes:

  • Change association provider API functions to take a fixed parameter for the named object instead of a keyword argument. This breaks backward compatibility. (Tim Potter)

  • Remove the CIMLocalNamespacePath class and replaced by a Python string. (Tim Potter)


  • Don’t use UserDict.DictMixin base class as it only exists in Python 2.3 and higher. (Tim Potter)


  • Add tests for parameter type checking for object location classes. (Tim Potter)

  • Add tests for string representation of object location classes. (Tim Potter)