Changelog history (compared to 2.6.4)

  • fix issue616: files and their contained fixutres are now properly considered for visibility, independently from the exact current working directory and test arguments that are used. Many thanks to Eric Siegerman and his PR235 which contains systematic tests for conftest visibility and now passes. This change also introduces the concept of a rootdir which is printed as a new pytest header and documented in the pytest customize web page.
  • change reporting of “diverted” tests, i.e. tests that are collected in one file but actually come from another (e.g. when tests in a test class come from a base class in a different file). We now show the nodeid and indicate via a postfix the other file.
  • add ability to set command line options by environment variable PYTEST_ADDOPTS.
  • added documentation on the new pytest-dev teams on bitbucket and github. See . Thanks to Anatoly for pushing and initial work on this.
  • fix issue650: new option --docttest-ignore-import-errors which will turn import errors in doctests into skips. Thanks Charles Cloud for the complete PR.
  • fix issue655: work around different ways that cause python2/3 to leak sys.exc_info into fixtures/tests causing failures in 3rd party code
  • fix issue615: assertion re-writing did not correctly escape % signs when formatting boolean operations, which tripped over mixing booleans with modulo operators. Thanks to Tom Viner for the report, triaging and fix.
  • implement issue351: add ability to specify parametrize ids as a callable to generate custom test ids. Thanks Brianna Laugher for the idea and implementation.
  • introduce and document new hookwrapper mechanism useful for plugins which want to wrap the execution of certain hooks for their purposes. This supersedes the undocumented __multicall__ protocol which pytest itself and some external plugins use. Note that pytest-2.8 is scheduled to drop supporting the old __multicall__ and only support the hookwrapper protocol.
  • use hookwrapper mechanism in builtin pytest plugins.
  • add a doctest ini option for doctest flags, thanks Holger Peters.
  • add note to docs that if you want to mark a parameter and the parameter is a callable, you also need to pass in a reason to disambiguate it from the “decorator” case. Thanks Tom Viner.
  • “python_classes” and “python_functions” options now support glob-patterns
for test discovery, as discussed in issue600. Thanks Ldiary Translations.


  • Improve assertion failure reporting on iterables, by using ndiff and pprint.
  • removed outdated japanese docs from source tree.
  • docs for “pytest_addhooks” hook. Thanks Bruno Oliveira.
  • updated plugin index docs. Thanks Bruno Oliveira.
  • fix issue557: with “-k” we only allow the old style “-” for negation at the beginning of strings and even that is deprecated. Use “not” instead. This should allow to pick parametrized tests where “-” appeared in the parameter.
  • fix issue604: Escape % character in the assertion message.
  • fix issue620: add explanation in the –genscript target about what the binary blob means. Thanks Dinu Gherman.
  • fix issue614: fixed pastebin support.
  • fix issue620: add explanation in the –genscript target about what the binary blob means. Thanks Dinu Gherman.
  • fix issue614: fixed pastebin support.


  • fix issue575: xunit-xml was reporting collection errors as failures instead of errors, thanks Oleg Sinyavskiy.
  • fix issue582: fix setuptools example, thanks Laszlo Papp and Ronny Pfannschmidt.
  • Fix infinite recursion bug when pickling capture.EncodedFile, thanks Uwe Schmitt.
  • fix issue589: fix bad interaction with numpy and others when showing exceptions. Check for precise “maximum recursion depth exceed” exception instead of presuming any RuntimeError is that one (implemented in py dep). Thanks Charles Cloud for analysing the issue.
  • fix conftest related fixture visibility issue: when running with a CWD outside a test package pytest would get fixture discovery wrong. Thanks to Wolfgang Schnerring for figuring out a reproducable example.
  • Introduce pytest_enter_pdb hook (needed e.g. by pytest_timeout to cancel the timeout when interactively entering pdb). Thanks Wolfgang Schnerring.
  • check xfail/skip also with non-python function test items. Thanks Floris Bruynooghe.


  • Added function pytest.freeze_includes(), which makes it easy to embed pytest into executables using tools like cx_freeze. See docs for examples and rationale. Thanks Bruno Oliveira.
  • Improve assertion rewriting cache invalidation precision.
  • fixed issue561: adapt autouse fixture example for python3.
  • fixed issue453: assertion rewriting issue with __repr__ containing “n{”, “n}” and “n~”.
  • fix issue560: correctly display code if an “else:” or “finally:” is followed by statements on the same line.
  • Fix example in monkeypatch documentation, thanks t-8ch.
  • fix issue572: correct tmpdir doc example for python3.
  • Do not mark as universal wheel because Python 2.6 is different from other builds due to the extra argparse dependency. Fixes issue566. Thanks sontek.
  • Implement issue549: user-provided assertion messages now no longer replace the py.test introspection message but are shown in addition to them.


  • No longer show line numbers in the –verbose output, the output is now purely the nodeid. The line number is still shown in failure reports. Thanks Floris Bruynooghe.
  • fix issue437 where assertion rewriting could cause pytest-xdist slaves to collect different tests. Thanks Bruno Oliveira.
  • fix issue555: add “errors” attribute to capture-streams to satisfy some distutils and possibly other code accessing sys.stdout.errors.
  • fix issue547 capsys/capfd also work when output capturing (“-s”) is disabled.
  • address issue170: allow pytest.mark.xfail(...) to specify expected exceptions via an optional “raises=EXC” argument where EXC can be a single exception or a tuple of exception classes. Thanks David Mohr for the complete PR.
  • fix integration of pytest with unittest.mock.patch decorator when it uses the “new” argument. Thanks Nicolas Delaby for test and PR.
  • fix issue with detecting conftest files if the arguments contain ”::” node id specifications (copy pasted from “-v” output)
  • fix issue544 by only removing “@NUM” at the end of ”::” separated parts and if the part has an ”.py” extension
  • don’t use py.std import helper, rather import things directly. Thanks Bruno Oliveira.


  • Cache exceptions from fixtures according to their scope (issue 467).
  • fix issue537: Avoid importing old assertion reinterpretation code by default.
  • fix issue364: shorten and enhance tracebacks representation by default. The new “–tb=auto” option (default) will only display long tracebacks for the first and last entry. You can get the old behaviour of printing all entries as long entries with “–tb=long”. Also short entries by default are now printed very similarly to “–tb=native” ones.
  • fix issue514: teach assertion reinterpretation about private class attributes
  • change -v output to include full node IDs of tests. Users can copy a node ID from a test run, including line number, and use it as a positional argument in order to run only a single test.
  • fix issue 475: fail early and comprehensible if calling pytest.raises with wrong exception type.
  • fix issue516: tell in getting-started about current dependencies.
  • cleanup a bit and specify supported versions. Thanks Jurko Gospodnetic for the PR.
  • change XPASS colour to yellow rather then red when tests are run with -v.
  • fix issue473: work around mock putting an unbound method into a class dict when double-patching.
  • fix issue498: if a fixture finalizer fails, make sure that the fixture is still invalidated.
  • fix issue453: the result of the pytest_assertrepr_compare hook now gets it’s newlines escaped so that format_exception does not blow up.
  • internal new warning system: pytest will now produce warnings when it detects oddities in your test collection or execution. Warnings are ultimately sent to a new pytest_logwarning hook which is currently only implemented by the terminal plugin which displays warnings in the summary line and shows more details when -rw (report on warnings) is specified.
  • change skips into warnings for test classes with an __init__ and callables in test modules which look like a test but are not functions.
  • fix issue436: improved finding of initial conftest files from command line arguments by using the result of parse_known_args rather than the previous flaky heuristics. Thanks Marc Abramowitz for tests and initial fixing approaches in this area.
  • fix issue #479: properly handle nose/unittest(2) SkipTest exceptions during collection/loading of test modules. Thanks to Marc Schlaich for the complete PR.
  • fix issue490: include pytest_load_initial_conftests in documentation and improve docstring.
  • fix issue472: clarify that pytest.config.getvalue() cannot work if it’s triggered ahead of command line parsing.
  • merge PR123: improved integration with mock.patch decorator on tests.
  • fix issue412: messing with stdout/stderr FD-level streams is now captured without crashes.
  • fix issue483: trial/py33 works now properly. Thanks Daniel Grana for PR.
  • improve example for pytest integration with “python test” which now has a generic “-a” or “–pytest-args” option where you can pass additional options as a quoted string. Thanks Trevor Bekolay.
  • simplified internal capturing mechanism and made it more robust against tests or setups changing FD1/FD2, also better integrated now with pytest.pdb() in single tests.
  • improvements to pytest’s own test-suite leakage detection, courtesy of PRs from Marc Abramowitz
  • fix issue492: avoid leak in test_writeorg. Thanks Marc Abramowitz.
  • fix issue493: don’t run tests in doc directory with python test (use tox -e doctesting for that)
  • fix issue486: better reporting and handling of early conftest loading failures
  • some cleanup and simplification of internal conftest handling.
  • work a bit harder to break reference cycles when catching exceptions. Thanks Jurko Gospodnetic.
  • fix issue443: fix skip examples to use proper comparison. Thanks Alex Groenholm.
  • support nose-style __test__ attribute on modules, classes and functions, including unittest-style Classes. If set to False, the test will not be collected.
  • fix issue512: show “<notset>” for arguments which might not be set in monkeypatch plugin. Improves output in documentation.


  • fix issue409 – better interoperate with cx_freeze by not trying to import from which causes problems for py27/cx_freeze. Thanks Wolfgang L. for reporting and tracking it down.
  • fixed docs and code to use “pytest” instead of “py.test” almost everywhere. Thanks Jurko Gospodnetic for the complete PR.
  • fix issue425: mention at end of “py.test -h” that –markers and –fixtures work according to specified test path (or current dir)
  • fix issue413: exceptions with unicode attributes are now printed correctly also on python2 and with pytest-xdist runs. (the fix requires py-1.4.20)
  • copy, cleanup and integrate capture from pylib 1.4.20.dev2 (rev 13d9af95547e)
  • address issue416: clarify docs as to loading semantics
  • fix issue429: comparing byte strings with non-ascii chars in assert expressions now work better. Thanks Floris Bruynooghe.
  • make capfd/capsys.capture private, its unused and shouldnt be exposed


  • merge new documentation styling PR from Tobias Bieniek.
  • fix issue403: allow parametrize of multiple same-name functions within a collection node. Thanks Andreas Kloeckner and Alex Gaynor for reporting and analysis.
  • Allow parameterized fixtures to specify the ID of the parameters by adding an ids argument to pytest.fixture() and pytest.yield_fixture(). Thanks Floris Bruynooghe.
  • fix issue404 by always using the binary xml escape in the junitxml plugin. Thanks Ronny Pfannschmidt.
  • fix issue407: fix addoption docstring to point to argparse instead of optparse. Thanks Daniel D. Wright.


  • dropped python2.5 from automated release testing of pytest itself which means it’s probably going to break soon (but still works with this release we believe).

  • simplified and fixed implementation for calling finalizers when parametrized fixtures or function arguments are involved. finalization is now performed lazily at setup time instead of in the “teardown phase”. While this might sound odd at first, it helps to ensure that we are correctly handling setup/teardown even in complex code. User-level code should not be affected unless it’s implementing the pytest_runtest_teardown hook and expecting certain fixture instances are torn down within (very unlikely and would have been unreliable anyway).

  • PR90: add –color=yes|no|auto option to force terminal coloring mode (“auto” is default). Thanks Marc Abramowitz.

  • fix issue319 - correctly show unicode in assertion errors. Many thanks to Floris Bruynooghe for the complete PR. Also means we depend on py>=1.4.19 now.

  • fix issue396 - correctly sort and finalize class-scoped parametrized tests independently from number of methods on the class.

  • refix issue323 in a better way – parametrization should now never cause Runtime Recursion errors because the underlying algorithm for re-ordering tests per-scope/per-fixture is not recursive anymore (it was tail-call recursive before which could lead to problems for more than >966 non-function scoped parameters).

  • fix issue290 - there is preliminary support now for parametrizing with repeated same values (sometimes useful to to test if calling a second time works as with the first time).

  • close issue240 - document precisely how pytest module importing works, discuss the two common test directory layouts, and how it interacts with PEP420-namespace packages.

  • fix issue246 fix finalizer order to be LIFO on independent fixtures depending on a parametrized higher-than-function scoped fixture. (was quite some effort so please bear with the complexity of this sentence :) Thanks Ralph Schmitt for the precise failure example.

  • fix issue244 by implementing special index for parameters to only use indices for paramentrized test ids

  • fix issue287 by running all finalizers but saving the exception from the first failing finalizer and re-raising it so teardown will still have failed. We reraise the first failing exception because it might be the cause for other finalizers to fail.

  • fix ordering when mock.patch or other standard decorator-wrappings are used with test methods. This fixues issue346 and should help with random “xdist” collection failures. Thanks to Ronny Pfannschmidt and Donald Stufft for helping to isolate it.

  • fix issue357 - special case “-k” expressions to allow for filtering with simple strings that are not valid python expressions. Examples: “-k 1.3” matches all tests parametrized with 1.3. “-k None” filters all tests that have “None” in their name and conversely “-k ‘not None’”. Previously these examples would raise syntax errors.

  • fix issue384 by removing the trial support code since the unittest compat enhancements allow trial to handle it on its own

  • don’t hide an ImportError when importing a plugin produces one. fixes issue375.

  • fix issue275 - allow usefixtures and autouse fixtures for running doctest text files.

  • fix issue380 by making –resultlog only rely on longrepr instead of the “reprcrash” attribute which only exists sometimes.

  • address issue122: allow @pytest.fixture(params=iterator) by exploding into a list early on.

  • fix pexpect-3.0 compatibility for pytest’s own tests. (fixes issue386)

  • allow nested parametrize-value markers, thanks James Lan for the PR.

  • fix unicode handling with new monkeypatch.setattr(import_path, value) API. Thanks Rob Dennis. Fixes issue371.

  • fix unicode handling with junitxml, fixes issue368.

  • In assertion rewriting mode on Python 2, fix the detection of coding cookies. See issue #330.

  • make “–runxfail” turn imperative pytest.xfail calls into no ops (it already did neutralize pytest.mark.xfail markers)

  • refine pytest / pkg_resources interactions: The AssertionRewritingHook PEP302 compliant loader now registers itself with setuptools/pkg_resources properly so that the pkg_resources.resource_stream method works properly. Fixes issue366. Thanks for the investigations and full PR to Jason R. Coombs.

  • pytestconfig fixture is now session-scoped as it is the same object during the whole test run. Fixes issue370.

  • avoid one surprising case of marker malfunction/confusion:

    @pytest.mark.some(lambda arg: ...)
    def test_function():

    would not work correctly because pytest assumes @pytest.mark.some gets a function to be decorated already. We now at least detect if this arg is an lambda and thus the example will work. Thanks Alex Gaynor for bringing it up.

  • xfail a test on pypy that checks wrong encoding/ascii (pypy does not error out). fixes issue385.

  • internally make varnames() deal with classes’s __init__, although it’s not needed by pytest itself atm. Also fix caching. Fixes issue376.

  • fix issue221 - handle importing of namespace-package with no properly.

  • refactor internal FixtureRequest handling to avoid monkeypatching. One of the positive user-facing effects is that the “request” object can now be used in closures.

  • fixed version comparison in pytest.importskip(modname, minverstring)

  • fix issue377 by clarifying in the nose-compat docs that pytest does not duplicate the unittest-API into the “plain” namespace.

  • fix verbose reporting for @mock’d test functions


  • on Windows require colorama and a newer py lib so that now uses colorama instead of its own ctypes hacks. (fixes issue365) thanks Paul Moore for bringing it up.
  • fix “-k” matching of tests where “repr” and “attr” and other names would cause wrong matches because of an internal implementation quirk (don’t ask) which is now properly implemented. fixes issue345.
  • avoid tmpdir fixture to create too long filenames especially when parametrization is used (issue354)
  • fix pytest-pep8 and pytest-flakes / pytest interactions (collection names in mark plugin was assuming an item always has a function which is not true for those plugins etc.) Thanks Andi Zeidler.
  • introduce node.get_marker/node.add_marker API for plugins like pytest-pep8 and pytest-flakes to avoid the messy details of the node.keywords pseudo-dicts. Adapted docs.
  • remove attempt to “dup” stdout at startup as it’s icky. the normal capturing should catch enough possibilities of tests messing up standard FDs.
  • add pluginmanager.do_configure(config) as a link to config.do_configure() for plugin-compatibility


  • When using parser.addoption() unicode arguments to the “type” keyword should also be converted to the respective types. thanks Floris Bruynooghe, @dnozay. (fixes issue360 and issue362)
  • fix dotted filename completion when using argcomplete thanks Anthon van der Neuth. (fixes issue361)
  • fix regression when a 1-tuple (“arg”,) is used for specifying parametrization (the values of the parametrization were passed nested in a tuple). Thanks Donald Stufft.
  • merge doc typo fixes, thanks Andy Dirnberger


known incompatibilities:

  • if calling –genscript from python2.7 or above, you only get a standalone script which works on python2.7 or above. Use Python2.6 to also get a python2.5 compatible version.
  • all xunit-style teardown methods (nose-style, pytest-style, unittest-style) will not be called if the corresponding setup method failed, see issue322 below.
  • the pytest_plugin_unregister hook wasn’t ever properly called and there is no known implementation of the hook - so it got removed.
  • pytest.fixture-decorated functions cannot be generators (i.e. use yield) anymore. This change might be reversed in 2.4.1 if it causes unforeseen real-life issues. However, you can always write and return an inner function/generator and change the fixture consumer to iterate over the returned generator. This change was done in lieu of the new pytest.yield_fixture decorator, see below.

new features:

  • experimentally introduce a new pytest.yield_fixture decorator which accepts exactly the same parameters as pytest.fixture but mandates a yield statement instead of a return statement from fixture functions. This allows direct integration with “with-style” context managers in fixture functions and generally avoids registering of finalization callbacks in favour of treating the “after-yield” as teardown code. Thanks Andreas Pelme, Vladimir Keleshev, Floris Bruynooghe, Ronny Pfannschmidt and many others for discussions.

  • allow boolean expression directly with skipif/xfail if a “reason” is also specified. Rework skipping documentation to recommend “condition as booleans” because it prevents surprises when importing markers between modules. Specifying conditions as strings will remain fully supported.

  • reporting: color the last line red or green depending if failures/errors occurred or everything passed. thanks Christian Theunert.

  • make “import pdb ; pdb.set_trace()” work natively wrt capturing (no “-s” needed anymore), making pytest.set_trace() a mere shortcut.

  • fix issue181: –pdb now also works on collect errors (and on internal errors) . This was implemented by a slight internal refactoring and the introduction of a new hook pytest_exception_interact hook (see next item).

  • fix issue341: introduce new experimental hook for IDEs/terminals to intercept debugging: pytest_exception_interact(node, call, report).

  • new monkeypatch.setattr() variant to provide a shorter invocation for patching out classes/functions from modules:

    monkeypatch.setattr(“requests.get”, myfunc)

    will replace the “get” function of the “requests” module with myfunc.

  • fix issue322: tearDownClass is not run if setUpClass failed. Thanks Mathieu Agopian for the initial fix. Also make all of pytest/nose finalizer mimick the same generic behaviour: if a setupX exists and fails, don’t run teardownX. This internally introduces a new method “node.addfinalizer()” helper which can only be called during the setup phase of a node.

  • simplify pytest.mark.parametrize() signature: allow to pass a CSV-separated string to specify argnames. For example: pytest.mark.parametrize("input,expected",  [(1,2), (2,3)]) works as well as the previous: pytest.mark.parametrize(("input", "expected"), ...).

  • add support for setUpModule/tearDownModule detection, thanks Brian Okken.

  • integrate tab-completion on options through use of “argcomplete”. Thanks Anthon van der Neut for the PR.

  • change option names to be hyphen-separated long options but keep the old spelling backward compatible. py.test -h will only show the hyphenated version, for example “–collect-only” but “–collectonly” will remain valid as well (for backward-compat reasons). Many thanks to Anthon van der Neut for the implementation and to Hynek Schlawack for pushing us.

  • fix issue 308 - allow to mark/xfail/skip individual parameter sets when parametrizing. Thanks Brianna Laugher.

  • call new experimental pytest_load_initial_conftests hook to allow 3rd party plugins to do something before a conftest is loaded.

Bug fixes:

  • fix issue358 - capturing options are now parsed more properly by using a new parser.parse_known_args method.
  • pytest now uses argparse instead of optparse (thanks Anthon) which means that “argparse” is added as a dependency if installing into python2.6 environments or below.
  • fix issue333: fix a case of bad unittest/pytest hook interaction.
  • PR27: correctly handle nose.SkipTest during collection. Thanks Antonio Cuni, Ronny Pfannschmidt.
  • fix issue355: junitxml puts name=”pytest” attribute to testsuite tag.
  • fix issue336: autouse fixture in plugins should work again.
  • fix issue279: improve object comparisons on assertion failure for standard datatypes and recognise Thanks to Brianna Laugher and Mathieu Agopian.
  • fix issue317: assertion rewriter support for the is_package method
  • fix issue335: document py.code.ExceptionInfo() object returned from pytest.raises(), thanks Mathieu Agopian.
  • remove implicit distribute_setup support from
  • fix issue305: ignore any problems when writing pyc files.
  • SO-17664702: call fixture finalizers even if the fixture function partially failed (finalizers would not always be called before)
  • fix issue320 - fix class scope for fixtures when mixed with module-level functions. Thanks Anatloy Bubenkoff.
  • you can specify “-q” or “-qq” to get different levels of “quieter” reporting (thanks Katarzyna Jachim)
  • fix issue300 - Fix order of conftest loading when starting py.test in a subdirectory.
  • fix issue323 - sorting of many module-scoped arg parametrizations
  • make sessionfinish hooks execute with the same cwd-context as at session start (helps fix plugin behaviour which write output files with relative path such as pytest-cov)
  • fix issue316 - properly reference collection hooks in docs
  • fix issue 306 - cleanup of -k/-m options to only match markers/test names/keywords respectively. Thanks Wouter van Ackooy.
  • improved doctest counting for doctests in python modules – files without any doctest items will not show up anymore and doctest examples are counted as separate test items. thanks Danilo Bellini.
  • fix issue245 by depending on the released py-1.4.14 which fixes to work with files with no mode. Thanks Jason R. Coombs.
  • fix junitxml generation when test output contains control characters, addressing issue267, thanks Jaap Broekhuizen
  • fix issue338: honor –tb style for setup/teardown errors as well. Thanks Maho.
  • fix issue307 - use yaml.safe_load in example, thanks Mark Eichin.
  • better parametrize error messages, thanks Brianna Laugher
  • pytest_terminal_summary(terminalreporter) hooks can now use ”.section(title)” and ”.line(msg)” methods to print extra information at the end of a test run.


  • fix issue169: respect –tb=style with setup/teardown errors as well.
  • never consider a fixture function for test function collection
  • allow re-running of test items / helps to fix pytest-reruntests plugin and also help to keep less fixture/resource references alive
  • put captured stdout/stderr into junitxml output even for passing tests (thanks Adam Goucher)
  • Issue 265 - integrate nose setup/teardown with setupstate so it doesnt try to teardown if it did not setup
  • issue 271 - dont write junitxml on slave nodes
  • Issue 274 - dont try to show full doctest example when doctest does not know the example location
  • issue 280 - disable assertion rewriting on buggy CPython 2.6.0
  • inject “getfixture()” helper to retrieve fixtures from doctests, thanks Andreas Zeidler
  • issue 259 - when assertion rewriting, be consistent with the default source encoding of ASCII on Python 2
  • issue 251 - report a skip instead of ignoring classes with init
  • issue250 unicode/str mixes in parametrization names and values now works
  • issue257, assertion-triggered compilation of source ending in a comment line doesn’t blow up in python2.5 (fixed through py>=1.4.13.dev6)
  • fix –genscript option to generate standalone scripts that also work with python3.3 (importer ordering)
  • issue171 - in assertion rewriting, show the repr of some global variables
  • fix option help for “-k”
  • move long description of distribution into README.rst
  • improve docstring for metafunc.parametrize()
  • fix bug where using capsys with pytest.set_trace() in a test function would break when looking at capsys.readouterr()
  • allow to specify prefixes starting with “_” when customizing python_functions test discovery. (thanks Graham Horler)
  • improve PYTEST_DEBUG tracing output by puting extra data on a new lines with additional indent
  • ensure OutcomeExceptions like skip/fail have initialized exception attributes
  • issue 260 - don’t use nose special setup on plain unittest cases
  • fix issue134 - print the collect errors that prevent running specified test items
  • fix issue266 - accept unicode in MarkEvaluator expressions


  • yielded test functions will now have autouse-fixtures active but cannot accept fixtures as funcargs - it’s anyway recommended to rather use the post-2.0 parametrize features instead of yield, see:
  • fix autouse-issue where autouse-fixtures would not be discovered if defined in a a/ file and tests in a/tests/
  • fix issue226 - LIFO ordering for fixture teardowns
  • fix issue224 - invocations with >256 char arguments now work
  • fix issue91 - add/discuss package/directory level setups in example
  • allow to dynamically define markers via item.keywords[...]=assignment integrating with “-m” option
  • make “-k” accept an expressions the same as with “-m” so that one can write: -k “name1 or name2” etc. This is a slight incompatibility if you used special syntax like “TestClass.test_method” which you now need to write as -k “TestClass and test_method” to match a certain method in a certain test class.


  • fix issue214 - parse modules that contain special objects like e. g. flask’s request object which blows up on getattr access if no request is active. thanks Thomas Waldmann.
  • fix issue213 - allow to parametrize with values like numpy arrays that do not support an __eq__ operator
  • fix issue215 - split into multiple files
  • fix issue148 - @unittest.skip on classes is now recognized and avoids calling setUpClass/tearDownClass, thanks Pavel Repin
  • fix issue209 - reintroduce python2.4 support by depending on newer pylib which re-introduced statement-finding for pre-AST interpreters
  • nose support: only call setup if its a callable, thanks Andrew Taumoefolau
  • fix issue219 - add py2.4-3.3 classifiers to TROVE list
  • in tracebacks ,* arg values are now shown next to normal arguments (thanks Manuel Jacob)
  • fix issue217 - support mock.patch with pytest’s fixtures - note that you need either mock-1.0.1 or the python3.3 builtin unittest.mock.
  • fix issue127 - improve documentation for pytest_addoption() and add a config.getoption(name) helper function for consistency.


  • fix issue208 and fix issue29 use new py version to avoid long pauses when printing tracebacks in long modules
  • fix issue205 - conftests in subdirs customizing pytest_pycollect_makemodule and pytest_pycollect_makeitem now work properly
  • fix teardown-ordering for parametrized setups
  • fix issue127 - better documentation for pytest_addoption and related objects.
  • fix unittest behaviour: TestCase.runtest only called if there are test methods defined
  • improve trial support: don’t collect its empty unittest.TestCase.runTest() method
  • “python test” now works with pytest itself
  • fix/improve internal/packaging related bits:
    • exception message check of now passes on python33 as well
    • issue206 - fix to work when a global PYTHONDONTWRITEBYTECODE=1 is present
    • add tox.ini to pytest distribution so that ignore-dirs and others config bits are properly distributed for maintainers who run pytest-own tests


  • fix issue202 - fix regression: using “self” from fixture functions now works as expected (it’s the same “self” instance that a test method which uses the fixture sees)
  • skip pexpect using tests ( mostly) on freebsd* systems due to pexpect not supporting it properly (hanging)
  • link to web pages from –markers output which provides help for pytest.mark.* usage.


  • fix issue202 - better automatic names for parametrized test functions

  • fix issue139 - introduce @pytest.fixture which allows direct scoping and parametrization of funcarg factories.

  • fix issue198 - conftest fixtures were not found on windows32 in some circumstances with nested directory structures due to path manipulation issues

  • fix issue193 skip test functions with were parametrized with empty parameter sets

  • fix python3.3 compat, mostly reporting bits that previously depended on dict ordering

  • introduce re-ordering of tests by resource and parametrization setup which takes precedence to the usual file-ordering

  • fix issue185 monkeypatching time.time does not cause pytest to fail

  • fix issue172 duplicate call of pytest.fixture decoratored setup_module functions

  • fix junitxml=path construction so that if tests change the current working directory and the path is a relative path it is constructed correctly from the original current working dir.

  • fix “python test” example to cause a proper “errno” return

  • fix issue165 - fix broken doc links and mention stackoverflow for FAQ

  • catch unicode-issues when writing failure representations to terminal to prevent the whole session from crashing

  • fix xfail/skip confusion: a skip-mark or an imperative pytest.skip will now take precedence before xfail-markers because we can’t determine xfail/xpass status in case of a skip. see also:

  • always report installed 3rd party plugins in the header of a test run

  • fix issue160: a failing setup of an xfail-marked tests should be reported as xfail (not xpass)

  • fix issue128: show captured output when capsys/capfd are used

  • fix issue179: propperly show the dependency chain of factories

  • pluginmanager.register(...) now raises ValueError if the plugin has been already registered or the name is taken

  • fix issue159: improve especially with respect to the “magic” history, also mention pytest-django, trial and unittest integration.

  • make request.keywords and node.keywords writable. All descendant collection nodes will see keyword values. Keywords are dictionaries containing markers and other info.

  • fix issue 178: xml binary escapes are now wrapped in py.xml.raw

  • fix issue 176: correctly catch the builtin AssertionError even when we replaced AssertionError with a subclass on the python level

  • factory discovery no longer fails with magic global callables that provide no sane __code__ object ( for example)

  • fix issue 182: testdir.inprocess_run now considers passed plugins

  • fix issue 188: ensure sys.exc_info is clear on python2

    before calling into a test

  • fix issue 191: add unittest TestCase runTest method support

  • fix issue 156: monkeypatch correctly handles class level descriptors

  • reporting refinements:

    • pytest_report_header now receives a “startdir” so that you can use startdir.bestrelpath(yourpath) to show nice relative path
    • allow plugins to implement both pytest_report_header and pytest_sessionstart (sessionstart is invoked first).
    • don’t show deselected reason line if there is none
    • py.test -vv will show all of assert comparisations instead of truncating


  • fix error message for rewritten assertions involving the % operator
  • fix issue 126: correctly match all invalid xml characters for junitxml binary escape
  • fix issue with unittest: now @unittest.expectedFailure markers should be processed correctly (you can also use @pytest.mark markers)
  • document integration with the extended distribute/setuptools test commands
  • fix issue 140: propperly get the real functions of bound classmethods for setup/teardown_class
  • fix issue #141: switch from the deceased to
  • fix issue #143: call unconfigure/sessionfinish always when configure/sessionstart where called
  • fix issue #144: better mangle test ids to junitxml classnames
  • upgrade to 0.6.27


  • fix uploaded package to only include neccesary files


  • fix issue101: wrong args to unittest.TestCase test function now produce better output
  • fix issue102: report more useful errors and hints for when a test directory was renamed and some pyc/__pycache__ remain
  • fix issue106: allow parametrize to be applied multiple times e.g. from module, class and at function level.
  • fix issue107: actually perform session scope finalization
  • don’t check in parametrize if indirect parameters are funcarg names
  • add chdir method to monkeypatch funcarg
  • fix crash resulting from calling monkeypatch undo a second time
  • fix issue115: make –collectonly robust against early failure (missing files/directories)
  • “-qq –collectonly” now shows only files and the number of tests in them
  • “-q –collectonly” now shows test ids
  • allow adding of attributes to test reports such that it also works with distributed testing (no upgrade of pytest-xdist needed)


  • fix issue99 (in pytest and py) internallerrors with resultlog now produce better output - fixed by normalizing pytest_internalerror input arguments.
  • fix issue97 / traceback issues (in pytest and py) improve traceback output in conjunction with jinja2 and cython which hack tracebacks
  • fix issue93 (in pytest and pytest-xdist) avoid “delayed teardowns”: the final test in a test node will now run its teardown directly instead of waiting for the end of the session. Thanks Dave Hunt for the good reporting and feedback. The pytest_runtest_protocol as well as the pytest_runtest_teardown hooks now have “nextitem” available which will be None indicating the end of the test run.
  • fix collection crash due to unknown-source collected items, thanks to Ralf Schmitt (fixed by depending on a more recent pylib)


  • fix issue90: introduce eager tearing down of test items so that teardown function are called earlier.
  • add an all-powerful metafunc.parametrize function which allows to parametrize test function arguments in multiple steps and therefore from indepdenent plugins and palces.
  • add a @pytest.mark.parametrize helper which allows to easily call a test function with different argument values
  • Add examples to the “parametrize” example page, including a quick port of Test scenarios and the new parametrize function and decorator.
  • introduce registration for “pytest.mark.*” helpers via ini-files or through plugin hooks. Also introduce a “–strict” option which will treat unregistered markers as errors allowing to avoid typos and maintain a well described set of markers for your test suite. See exaples at and its links.
  • issue50: introduce “-m marker” option to select tests based on markers (this is a stricter and more predictable version of ‘-k’ in that “-m” only matches complete markers and has more obvious rules for and/or semantics.
  • new feature to help optimizing the speed of your tests: –durations=N option for displaying N slowest test calls and setup/teardown methods.
  • fix issue87: –pastebin now works with python3
  • fix issue89: –pdb with unexpected exceptions in doctest work more sensibly
  • fix and cleanup pytest’s own test suite to not leak FDs
  • fix issue83: link to generated funcarg list
  • fix issue74: pyarg module names are now checked against imp.find_module false positives
  • fix compatibility with twisted/trial-11.1.0 use cases
  • simplify Node.listchain
  • simplify junitxml output code by relying on py.xml
  • add support for skip properties on unittest classes and functions


  • fix issue79: assertion rewriting failed on some comparisons in boolops
  • correctly handle zero length arguments (a la pytest ‘’)
  • fix issue67 / junitxml now contains correct test durations, thanks ronny
  • fix issue75 / skipping test failure on jython
  • fix issue77 / Allow assertrepr_compare hook to apply to a subset of tests


  • fix assertion rewriting on files with windows newlines on some Python versions
  • refine test discovery by package/module name (–pyargs), thanks Florian Mayer
  • fix issue69 / assertion rewriting fixed on some boolean operations
  • fix issue68 / packages now work with assertion rewriting
  • fix issue66: use different assertion rewriting caches when the -O option is passed
  • don’t try assertion rewriting on Jython, use reinterp


  • fix issue64 / pytest.set_trace now works within pytest_generate_tests hooks
  • fix issue60 / fix error conditions involving the creation of __pycache__
  • fix issue63 / assertion rewriting on inserts involving strings containing ‘%’
  • fix assertion rewriting on calls with a ** arg
  • don’t cache rewritten modules if bytecode generation is disabled
  • fix assertion rewriting in read-only directories
  • fix issue59: provide system-out/err tags for junitxml output
  • fix issue61: assertion rewriting on boolean operations with 3 or more operands
  • you can now build a man page with “cd doc ; make man”


  • fix issue53 call nosestyle setup functions with correct ordering
  • fix issue58 and issue59: new assertion code fixes
  • merge Benjamin’s assertionrewrite branch: now assertions for test modules on python 2.6 and above are done by rewriting the AST and saving the pyc file before the test module is imported. see doc/assert.txt for more info.
  • fix issue43: improve doctests with better traceback reporting on unexpected exceptions
  • fix issue47: timing output in junitxml for test cases is now correct
  • fix issue48: typo in MarkInfo repr leading to exception
  • fix issue49: avoid confusing error when initizaliation partially fails
  • fix issue44: env/username expansion for junitxml file path
  • show releaselevel information in test runs for pypy
  • reworked doc pages for better navigation and PDF generation
  • report KeyboardInterrupt even if interrupted during session startup
  • fix issue 35 - provide PDF doc version and download link from index page


  • fix issue38: nicer tracebacks on calls to hooks, particularly early configure/sessionstart ones
  • fix missing skip reason/meta information in junitxml files, reported via
  • fix issue34: avoid collection failure with “test” prefixed classes deriving from object.
  • don’t require zlib (and other libs) for genscript plugin without –genscript actually being used.
  • speed up skips (by not doing a full traceback represenation internally)
  • fix issue37: avoid invalid characters in junitxml’s output


  • tackle issue32 - speed up test runs of very quick test functions by reducing the relative overhead

  • fix issue30 - extended xfail/skipif handling and improved reporting. If you have a syntax error in your skip/xfail expressions you now get nice error reports.

    Also you can now access module globals from xfail/skipif expressions so that this for example works now:

    import pytest
    import mymodule
    @pytest.mark.skipif("mymodule.__version__[0] == "1")
    def test_function():

    This will not run the test function if the module’s version string does not start with a “1”. Note that specifying a string instead of a boolean expressions allows py.test to report meaningful information when summarizing a test run as to what conditions lead to skipping (or xfail-ing) tests.

  • fix issue28 - setup_method and pytest_generate_tests work together The setup_method fixture method now gets called also for test function invocations generated from the pytest_generate_tests hook.

  • fix issue27 - collectonly and keyword-selection (-k) now work together Also, if you do “py.test –collectonly -q” you now get a flat list of test ids that you can use to paste to the py.test commandline in order to execute a particular test.

  • fix issue25 avoid reported problems with –pdb and python3.2/encodings output

  • fix issue23 - tmpdir argument now works on Python3.2 and WindowsXP Starting with Python3.2 os.symlink may be supported. By requiring a newer py lib version the py.path.local() implementation acknowledges this.

  • fixed typos in the docs (thanks Victor Garcia, Brianna Laugher) and particular thanks to Laura Creighton who also revieved parts of the documentation.

  • fix slighly wrong output of verbose progress reporting for classes (thanks Amaury)

  • more precise (avoiding of) deprecation warnings for node.Class|Function accesses

  • avoid std unittest assertion helper code in tracebacks (thanks Ronny)


  • refine and unify initial capturing so that it works nicely even if the logging module is used on an early-loaded file or plugin.
  • allow to omit “()” in test ids to allow for uniform test ids as produced by Alfredo’s nice pytest.vim plugin.
  • fix issue12 - show plugin versions with “–version” and “–traceconfig” and also document how to add extra information to reporting test header
  • fix issue17 (import-* reporting issue on python3) by requiring py>1.4.0 (1.4.1 is going to include it)
  • fix issue10 (numpy arrays truth checking) by refining assertion interpretation in py lib
  • fix issue15: make nose compatibility tests compatible with python3 (now that nose-1.0 supports python3)
  • remove somewhat surprising “same-conftest” detection because it ignores when they appear in several subdirs.
  • improve assertions (“not in”), thanks Floris Bruynooghe
  • improve behaviour/warnings when running on top of “python -OO” (assertions and docstrings are turned off, leading to potential false positives)
  • introduce a pytest_cmdline_processargs(args) hook to allow dynamic computation of command line arguments. This fixes a regression because py.test prior to 2.0 allowed to set command line options from files which so far pytest-2.0 only allowed from ini-files now.
  • fix issue7: assert failures in doctest modules. unexpected failures in doctests will not generally show nicer, i.e. within the doctest failing context.
  • fix issue9: setup/teardown functions for an xfail-marked test will report as xfail if they fail but report as normally passing (not xpassing) if they succeed. This only is true for “direct” setup/teardown invocations because teardown_class/ teardown_module cannot closely relate to a single test.
  • fix issue14: no logging errors at process exit
  • refinements to “collecting” output on non-ttys
  • refine internal plugin registration and –traceconfig output
  • introduce a mechanism to prevent/unregister plugins from the command line, see
  • activate resultlog plugin by default
  • fix regression wrt yielded tests which due to the collection-before-running semantics were not setup as with pytest 1.3.4. Note, however, that the recommended and much cleaner way to do test parametraization remains the “pytest_generate_tests” mechanism, see the docs.


  • pytest-2.0 is now its own package and depends on pylib-2.0
  • new ability: python -m pytest / python -m pytest.main ability
  • new python invcation: pytest.main(args, plugins) to load some custom plugins early.
  • try harder to run unittest test suites in a more compatible manner by deferring setup/teardown semantics to the unittest package. also work harder to run twisted/trial and Django tests which should now basically work by default.
  • introduce a new way to set config options via ini-style files, by default setup.cfg and tox.ini files are searched. The old ways (certain environment variables, dynamic reading is removed).
  • add a new “-q” option which decreases verbosity and prints a more nose/unittest-style “dot” output.
  • fix issue135 - marks now work with unittest test cases as well
  • fix issue126 - introduce py.test.set_trace() to trace execution via PDB during the running of tests even if capturing is ongoing.
  • fix issue123 - new “python -m py.test” invocation for py.test (requires Python 2.5 or above)
  • fix issue124 - make reporting more resilient against tests opening files on filedescriptor 1 (stdout).
  • fix issue109 - sibling files will not be loaded. (and Directory collectors cannot be customized anymore from a Directory’s - this needs to happen at least one level up).
  • introduce (customizable) assertion failure representations and enhance output on assertion failures for comparisons and other cases (Floris Bruynooghe)
  • nose-plugin: pass through type-signature failures in setup/teardown functions instead of not calling them (Ed Singleton)
  • remove py.test.collect.Directory (follows from a major refactoring and simplification of the collection process)
  • majorly reduce py.test core code, shift function/python testing to own plugin
  • fix issue88 (finding custom test nodes from command line arg)
  • refine ‘tmpdir’ creation, will now create basenames better associated with test names (thanks Ronny)
  • “xpass” (unexpected pass) tests don’t cause exitcode!=0
  • fix issue131 / issue60 - importing doctests in __init__ files used as namespace packages
  • fix issue93 stdout/stderr is captured while importing
  • fix bug: unittest collected functions now also can have “pytestmark” applied at class/module level
  • add ability to use “class” level for cached_setup helper
  • fix strangeness: mark.* objects are now immutable, create new instances


  • fix issue111: improve install documentation for windows
  • fix issue119: fix custom collectability of as a module
  • fix issue116: –doctestmodules work with files as well
  • fix issue115: unify internal exception passthrough/catching/GeneratorExit
  • fix issue118: new –tb=native for presenting cpython-standard exceptions


  • fix issue113: assertion representation problem with triple-quoted strings (and possibly other cases)
  • make conftest loading detect that a conftest file with the same content was already loaded, avoids surprises in nested directory structures which can be produced e.g. by Hudson. It probably removes the need to use –confcutdir in most cases.
  • fix terminal coloring for win32 (thanks Michael Foord for reporting)
  • fix weirdness: make terminal width detection work on stdout instead of stdin (thanks Armin Ronacher for reporting)
  • remove trailing whitespace in all py/text distribution files


New features

  • fix issue103: introduce py.test.raises as context manager, examples:

    with py.test.raises(ZeroDivisionError):
        x = 0
        1 / x
    with py.test.raises(RuntimeError) as excinfo:
    # you may do extra checks on excinfo.value|type|traceback here

    (thanks Ronny Pfannschmidt)

  • Funcarg factories can now dynamically apply a marker to a test invocation. This is for example useful if a factory provides parameters to a test which are expected-to-fail:

    def pytest_funcarg__arg(request):
        request.applymarker(py.test.mark.xfail(reason="flaky config"))
    def test_function(arg):
  • improved error reporting on collection and import errors. This makes use of a more general mechanism, namely that for custom test item/collect nodes node.repr_failure(excinfo) is now uniformly called so that you can override it to return a string error representation of your choice which is going to be reported as a (red) string.

  • introduce ‘–junitprefix=STR’ option to prepend a prefix to all reports in the junitxml file.

Bug fixes / Maintenance

  • make tests and the pytest_recwarn plugin in particular fully compatible to Python2.7 (if you use the recwarn funcarg warnings will be enabled so that you can properly check for their existence in a cross-python manner).
  • refine –pdb: ignore xfailed tests, unify its TB-reporting and don’t display failures again at the end.
  • fix assertion interpretation with the ** operator (thanks Benjamin Peterson)
  • fix issue105 assignment on the same line as a failing assertion (thanks Benjamin Peterson)
  • fix issue104 proper escaping for test names in junitxml plugin (thanks anonymous)
  • fix issue57 -f|–looponfail to work with xpassing tests (thanks Ronny)
  • fix issue92 collectonly reporter and –pastebin (thanks Benjamin Peterson)
  • fix py.code.compile(source) to generate unique filenames
  • fix assertion re-interp problems on PyPy, by defering code compilation to the (overridable) Frame.eval class. (thanks Amaury Forgeot)
  • fix py.path.local.pyimport() to work with directories
  • streamline py.path.local.mkdtemp implementation and usage
  • don’t print empty lines when showing junitxml-filename
  • add optional boolean ignore_errors parameter to py.path.local.remove
  • fix terminal writing on win32/python2.4
  • py.process.cmdexec() now tries harder to return properly encoded unicode objects on all python versions
  • install plain py.test/py.which scripts also for Jython, this helps to get canonical script paths in virtualenv situations
  • make path.bestrelpath(path) return ”.”, note that when calling X.bestrelpath the assumption is that X is a directory.
  • make initial conftest discovery ignore “–” prefixed arguments
  • fix resultlog plugin when used in an multicpu/multihost xdist situation (thanks Jakub Gustak)
  • perform distributed testing related reporting in the xdist-plugin rather than having dist-related code in the generic py.test distribution
  • fix homedir detection on Windows
  • ship version 0.6.13


New features

  • issue91: introduce new py.test.xfail(reason) helper to imperatively mark a test as expected to fail. Can be used from within setup and test functions. This is useful especially for parametrized tests when certain configurations are expected-to-fail. In this case the declarative approach with the @py.test.mark.xfail cannot be used as it would mark all configurations as xfail.

  • issue102: introduce new –maxfail=NUM option to stop test runs after NUM failures. This is a generalization of the ‘-x’ or ‘–exitfirst’ option which is now equivalent to ‘–maxfail=1’. Both ‘-x’ and ‘–maxfail’ will now also print a line near the end indicating the Interruption.

  • issue89: allow py.test.mark decorators to be used on classes (class decorators were introduced with python2.6) and also allow to have multiple markers applied at class/module level by specifying a list.

  • improve and refine letter reporting in the progress bar: . pass f failed test s skipped tests (reminder: use for dependency/platform mismatch only) x xfailed test (test that was expected to fail) X xpassed test (test that was expected to fail but passed)

    You can use any combination of ‘fsxX’ with the ‘-r’ extended reporting option. The xfail/xpass results will show up as skipped tests in the junitxml output - which also fixes issue99.

  • make py.test.cmdline.main() return the exitstatus instead of raising SystemExit and also allow it to be called multiple times. This of course requires that your application and tests are properly teared down and don’t have global state.

Fixes / Maintenance

  • improved traceback presentation: - improved and unified reporting for “–tb=short” option - Errors during test module imports are much shorter, (using –tb=short style) - raises shows shorter more relevant tracebacks - –fulltrace now more systematically makes traces longer / inhibits cutting
  • improve support for raises and other dynamically compiled code by manipulating python’s linecache.cache instead of the previous rather hacky way of creating custom code objects. This makes it seemlessly work on Jython and PyPy where it previously didn’t.
  • fix issue96: make capturing more resilient against Control-C interruptions (involved somewhat substantial refactoring to the underlying capturing functionality to avoid race conditions).
  • fix chaining of conditional skipif/xfail decorators - so it works now as expected to use multiple @py.test.mark.skipif(condition) decorators, including specific reporting which of the conditions lead to skipping.
  • fix issue95: late-import zlib so that it’s not required for general py.test startup.
  • fix issue94: make reporting more robust against bogus source code (and internally be more careful when presenting unexpected byte sequences)


  • deprecate –report option in favour of a new shorter and easier to remember -r option: it takes a string argument consisting of any combination of ‘xfsX’ characters. They relate to the single chars you see during the dotted progress printing and will print an extra line per test at the end of the test run. This extra line indicates the exact position or test ID that you directly paste to the py.test cmdline in order to re-run a particular test.

  • allow external plugins to register new hooks via the new pytest_addhooks(pluginmanager) hook. The new release of the pytest-xdist plugin for distributed and looponfailing testing requires this feature.

  • add a new pytest_ignore_collect(path, config) hook to allow projects and plugins to define exclusion behaviour for their directory structure - for example you may define in a this method:

    def pytest_ignore_collect(path):
        return path.check(link=1)

    to prevent even a collection try of any tests in symlinked dirs.

  • new pytest_pycollect_makemodule(path, parent) hook for allowing customization of the Module collection object for a matching test module.

  • extend and refine xfail mechanism: @py.test.mark.xfail(run=False) do not run the decorated test @py.test.mark.xfail(reason="...") prints the reason string in xfail summaries specifiying --runxfail on command line virtually ignores xfail markers

  • expose (previously internal) commonly useful methods: -> return terminal width -> print colored/bold text on linux/win32 -> return limited representation string

  • expose test outcome related exceptions as py.test.skip.Exception, py.test.raises.Exception etc., useful mostly for plugins doing special outcome interpretation/tweaking

  • (issue85) fix junitxml plugin to handle tests with non-ascii output

  • fix/refine python3 compatibility (thanks Benjamin Peterson)

  • fixes for making the jython/win32 combination work, note however: jython2.5.1/win32 does not provide a command line launcher, see . See pylib install documentation for how to work around.

  • fixes for handling of unicode exception values and unprintable objects

  • (issue87) fix unboundlocal error in assertionold code

  • (issue86) improve documentation for looponfailing

  • refine IO capturing: stdin-redirect pseudo-file now has a NOP close() method

  • ship version 0.6.10

  • added links to the new capturelog and coverage plugins


  • refined usage and options for “py.cleanup”:

    py.cleanup     # remove "*.pyc" and "*$py.class" (jython) files
    py.cleanup -e .swp -e .cache # also remove files with these extensions
    py.cleanup -s  # remove "build" and "dist" directory next to files
    py.cleanup -d  # also remove empty directories
    py.cleanup -a  # synonym for "-s -d -e 'pip-log.txt'"
    py.cleanup -n  # dry run, only show what would be removed
  • add a new option “py.test –funcargs” which shows available funcargs and their help strings (docstrings on their respective factory function) for a given test path

  • display a short and concise traceback if a funcarg lookup fails

  • early-load “” files in non-dot first-level sub directories. allows to conveniently keep and access test-related options in a test subdir and still add command line options.

  • fix issue67: new super-short traceback-printing option: “–tb=line” will print a single line for each failing (python) test indicating its filename, lineno and the failure value

  • fix issue78: always call python-level teardown functions even if the according setup failed. This includes refinements for calling setup_module/class functions which will now only be called once instead of the previous behaviour where they’d be called multiple times if they raise an exception (including a Skipped exception). Any exception will be re-corded and associated with all tests in the according module/class scope.

  • fix issue63: assume <40 columns to be a bogus terminal width, default to 80

  • fix pdb debugging to be in the correct frame on raises-related errors

  • update to fix an issue where recursive imports might unnecessarily break importing

  • fix plugin links


  • moved dist/looponfailing from py.test core into a new separately released pytest-xdist plugin.
  • new junitxml plugin: –junitxml=path will generate a junit style xml file which is processable e.g. by the Hudson CI system.
  • new option: –genscript=path will generate a standalone py.test script which will not need any libraries installed. thanks to Ralf Schmitt.
  • new option: –ignore will prevent specified path from collection. Can be specified multiple times.
  • new option: –confcutdir=dir will make py.test only consider conftest files that are relative to the specified dir.
  • new funcarg: “pytestconfig” is the pytest config object for access to command line args and can now be easily used in a test.
  • install ‘py.test’ and py.which with a -$VERSION suffix to disambiguate between Python3, python2.X, Jython and PyPy installed versions.
  • new “pytestconfig” funcarg allows access to test config object
  • new “pytest_report_header” hook can return additional lines to be displayed at the header of a test run.
  • (experimental) allow “py.test path::name1::name2::...” for pointing to a test within a test collection directly. This might eventually evolve as a full substitute to “-k” specifications.
  • streamlined plugin loading: order is now as documented in customize.html: setuptools, ENV, commandline, conftest. also setuptools entry point names are turned to canonical namees (“pytest_*”)
  • automatically skip tests that need ‘capfd’ but have no os.dup
  • allow pytest_generate_tests to be defined in classes as well
  • deprecate usage of ‘disabled’ attribute in favour of pytestmark
  • deprecate definition of Directory, Module, Class and Function nodes in files. Use pytest collect hooks instead.
  • collection/item node specific runtest/collect hooks are only called exactly on matching files, i.e. ones which are exactly below the filesystem path of an item
  • change: the first pytest_collect_directory hook to return something will now prevent further hooks to be called.
  • change: figleaf plugin now requires –figleaf to run. Also change its long command line options to be a bit shorter (see py.test -h).
  • change: pytest doctest plugin is now enabled by default and has a new option –doctest-glob to set a pattern for file matches.
  • change: remove internal py._* helper vars, only keep py._pydir
  • robustify capturing to survive if custom pytest_runtest_setup code failed and prevented the capturing setup code from running.
  • make py.test.* helpers provided by default plugins visible early - works transparently both for pydoc and for interactive sessions which will regularly see e.g. py.test.mark and py.test.importorskip.
  • simplify internal plugin manager machinery
  • simplify internal collection tree by introducing a RootCollector node
  • fix assert reinterpreation that sees a call containing “keyword=...”
  • fix issue66: invoke pytest_sessionstart and pytest_sessionfinish hooks on slaves during dist-testing, report module/session teardown hooks correctly.
  • fix issue65: properly handle dist-testing if no execnet/py lib installed remotely.
  • skip some install-tests if no execnet is available
  • fix docs, fix internal bin/ script generation


  • introduce automatic plugin registration via ‘pytest11’ entrypoints via setuptools’ pkg_resources.iter_entry_points
  • fix py.test dist-testing to work with execnet >= 1.0.0b4
  • re-introduce py.test.cmdline.main() for better backward compatibility
  • svn paths: fix a bug with path.check(versioned=True) for svn paths, allow ‘%’ in svn paths, make svnwc.update() default to interactive mode like in 1.0.x and add svnwc.update(interactive=False) to inhibit interaction.
  • refine distributed tarball to contain test and no pyc files
  • try harder to have deprecation warnings for py.compat.* accesses report a correct location


  • adjust and improve docs
  • remove tool and internal namespace - it was never really advertised and can still be used with the old release if needed. If there is interest it could be revived into its own tool i guess.
  • fix issue48 and issue59: raise an Error if the module from an imported test file does not seem to come from the filepath - avoids “same-name” confusion that has been reported repeatedly
  • merged Ronny’s nose-compatibility hacks: now nose-style setup_module() and setup() functions are supported
  • introduce generalized py.test.mark function marking
  • reshuffle / refine command line grouping
  • deprecate parser.addgroup in favour of getgroup which creates option group
  • add –report command line option that allows to control showing of skipped/xfailed sections
  • generalized skipping: a new way to mark python functions with skipif or xfail at function, class and modules level based on platform or sys-module attributes.
  • extend py.test.mark decorator to allow for positional args
  • introduce and test “py.cleanup -d” to remove empty directories
  • fix issue #59 - robustify unittest test collection
  • make bpython/help interaction work by adding an __all__ attribute to ApiModule, cleanup initpkg
  • use MIT license for pylib, add some contributors
  • remove py.execnet code and substitute all usages with ‘execnet’ proper
  • fix issue50 - cached_setup now caches more to expectations for test functions with multiple arguments.
  • merge Jarko’s fixes, issue #45 and #46
  • add the ability to specify a path for py.lookup to search in
  • fix a funcarg cached_setup bug probably only occuring in distributed testing and “module” scope with teardown.
  • many fixes and changes for making the code base python3 compatible, many thanks to Benjamin Peterson for helping with this.
  • consolidate builtins implementation to be compatible with >=2.3, add helpers to ease keeping 2 and 3k compatible code
  • deprecate py.compat.doctest|subprocess|textwrap|optparse
  • deprecate py.magic.autopath, remove py/magic directory
  • move pytest assertion handling to py/code and a pytest_assertion plugin, add “–no-assert” option, deprecate py.magic namespaces in favour of (less) py.code ones.
  • consolidate and cleanup py/code classes and files
  • cleanup py/misc, move tests to bin-for-dist
  • introduce delattr/delitem/delenv methods to py.test’s monkeypatch funcarg
  • consolidate py.log implementation, remove old approach.
  • introduce and for distinguishing between text/unicode and byte-streams (uses underlying standard lib io.* if available)
  • make py.unittest_convert helper script available which converts “” style files into the simpler assert/direct-test-classes py.test/nosetests style. The script was written by Laura Creighton.
  • simplified internal localpath implementation


  • fixing packaging issues, triggered by fedora redhat packaging, also added doc, examples and contrib dirs to the tarball.
  • added a documentation link to the new django plugin.


  • added a ‘pytest_nose’ plugin which handles nose.SkipTest, nose-style function/method/generator setup/teardown and tries to report functions correctly.
  • capturing of unicode writes or encoded strings to sys.stdout/err work better, also terminalwriting was adapted and somewhat unified between windows and linux.
  • improved documentation layout and content a lot
  • added a “–help-config” option to show / ENV-var names for all longopt cmdline options, and some special variables. renamed ‘conf_capture’ conftest setting to ‘option_capture’ accordingly.
  • fix issue #27: better reporting on non-collectable items given on commandline (e.g. pyc files)
  • fix issue #33: added –version flag (thanks Benjamin Peterson)
  • fix issue #32: adding support for “incomplete” paths to wcpath.status()
  • “Test” prefixed classes are not collected by default anymore if they have an __init__ method
  • monkeypatch setenv() now accepts a “prepend” parameter
  • improved reporting of collection error tracebacks
  • simplified multicall mechanism and plugin architecture, renamed some internal methods and argnames


  • more terse reporting try to show filesystem path relatively to current dir
  • improve xfail output a bit


  • cleanly handle and report final teardown of test setup
  • fix svn-1.6 compat issue with py.path.svnwc().versioned() (thanks Wouter Vanden Hove)
  • setup/teardown or collection problems now show as ERRORs or with big “E“‘s in the progress lines. they are reported and counted separately.
  • dist-testing: properly handle test items that get locally collected but cannot be collected on the remote side - often due to platform/dependency reasons
  • simplified py.test.mark API - see keyword plugin documentation
  • integrate better with logging: capturing now by default captures test functions and their immediate setup/teardown in a single stream
  • capsys and capfd funcargs now have a readouterr() and a close() method (underlyingly objects are used which grew a readouterr() method as well to return snapshots of captured out/err)
  • make assert-reinterpretation work better with comparisons not returning bools (reported with numpy from thanks maciej fijalkowski)
  • reworked per-test output capturing into the plugin and thus removed capturing code from config object
  • item.repr_failure(excinfo) instead of item.repr_failure(excinfo, outerr)


  • pytest_unittest-plugin is now enabled by default
  • introduced pytest_keyboardinterrupt hook and refined pytest_sessionfinish hooked, added tests.
  • workaround a buggy logging module interaction (“closing already closed files”). Thanks to Sridhar Ratnakumar for triggering.
  • if plugins use “py.test.importorskip” for importing a dependency only a warning will be issued instead of exiting the testing process.
  • many improvements to docs: - refined funcargs doc , use the term “factory” instead of “provider” - added a new talk/tutorial doc page - better download page - better plugin docstrings - added new plugins page and automatic doc generation script
  • fixed teardown problem related to partially failing funcarg setups (thanks MrTopf for reporting), “pytest_runtest_teardown” is now always invoked even if the “pytest_runtest_setup” failed.
  • tweaked doctest output for docstrings in py modules, thanks Radomir.


  • renamed py.test.xfail back to py.test.mark.xfail to avoid two ways to decorate for xfail
  • re-added py.test.mark decorator for setting keywords on functions (it was actually documented so removing it was not nice)
  • remove scope-argument from request.addfinalizer() because request.cached_setup has the scope arg. TOOWTDI.
  • perform setup finalization before reporting failures
  • apply modified patches from Andreas Kloeckner to allow test functions to have no func_code (#22) and to make “-k” and function keywords work (#20)
  • apply patch from Daniel Peolzleithner (issue #23)
  • resolve issue #18, multiprocessing.Manager() and redirection clash
  • make __name__ == “__channelexec__” for remote_exec code


  • plugin classes are removed: one now defines hooks directly in or global pytest_*.py files.
  • added new pytest_namespace(config) hook that allows to inject helpers directly to the py.test.* namespace.
  • documented and refined many hooks
  • added new style of generative tests via pytest_generate_tests hook that integrates well with function arguments.


  • introduced new “funcarg” setup method, see doc/test/funcarg.txt
  • introduced plugin architecuture and many new py.test plugins, see doc/test/plugins.txt
  • teardown_method is now guaranteed to get called after a test method has run.
  • new method: py.test.importorskip(mod,minversion) will either import or call py.test.skip()
  • completely revised internal py.test architecture
  • new py.process.ForkedFunc object allowing to fork execution of a function to a sub process and getting a result back.

XXX lots of things missing here XXX


  • refined installation and metadata, created new, now based on setuptools/ez_setup (thanks to Ralf Schmitt for his support).
  • improved the way of making py.* scripts available in windows environments, they are now added to the Scripts directory as ”.cmd” files.
  • py.path.svnwc.status() now is more complete and uses xml output from the ‘svn’ command if available (Guido Wesdorp)
  • fix for py.path.svn* to work with svn 1.5 (Chris Lamb)
  • fix path.relto(otherpath) method on windows to use normcase for checking if a path is relative.
  • py.test’s traceback is better parseable from editors (follows the filenames:LINENO: MSG convention) (thanks to Osmo Salomaa)
  • fix to javascript-generation, “py.test –runbrowser” should work more reliably now
  • removed previously accidentally added py.test.broken and py.test.notimplemented helpers.
  • there now is a py.__version__ attribute


This is a fairly complete list of v0.9.1, which can serve as a reference for developers.

  • allowing + signs in py.path.svn urls [39106]
  • fixed support for Failed exceptions without excinfo in py.test [39340]
  • added support for killing processes for Windows (as well as platforms that support os.kill) in py.misc.killproc [39655]
  • added setup/teardown for generative tests to py.test [40702]
  • added detection of FAILED TO LOAD MODULE to py.test [40703, 40738, 40739]
  • fixed problem with calling .remove() on wcpaths of non-versioned files in py.path [44248]
  • fixed some import and inheritance issues in py.test [41480, 44648, 44655]
  • fail to run greenlet tests when pypy is available, but without stackless [45294]
  • small fixes in rsession tests [45295]
  • fixed issue with 2.5 type representations in py.test [45483, 45484]
  • made that internal reporting issues displaying is done atomically in py.test [45518]
  • made that non-existing files are igored by the py.lookup script [45519]
  • improved exception name creation in py.test [45535]
  • made that less threads are used in execnet [merge in 45539]
  • removed lock required for atomical reporting issue displaying in py.test [45545]
  • removed globals from execnet [45541, 45547]
  • refactored cleanup mechanics, made that setDaemon is set to 1 to make atexit get called in 2.5 (py.execnet) [45548]
  • fixed bug in joining threads in py.execnet’s servemain [45549]
  • refactored py.test.rsession tests to not rely on exact output format anymore [45646]
  • using repr() on test outcome [45647]
  • added ‘Reason’ classes for py.test.skip() [45648, 45649]
  • killed some unnecessary sanity check in py.test.collect [45655]
  • avoid using os.tmpfile() in because on Windows it’s only usable by Administrators [45901]
  • added support for locking and non-recursive commits to py.path.svnwc [45994]
  • locking files in py.execnet to prevent CPython from segfaulting [46010]
  • added export() method to py.path.svnurl
  • fixed -d -x in py.test [47277]
  • fixed argument concatenation problem in py.path.svnwc [49423]
  • restore py.test behaviour that it exits with code 1 when there are failures [49974]
  • don’t fail on html files that don’t have an accompanying .txt file [50606]
  • fixed ‘ < input’ [50645]
  • small fix for code indentation in py.code.source [50755]
  • fix documentation building [51285]
  • improved checks for source representation of code blocks in py.test [51292]
  • added support for passing authentication to py.path.svn* objects [52000, 52001]
  • removed sorted() call for py.apigen tests in favour of [].sort() to support Python 2.3 [52481]