Update dependency pytest to v9.1.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
pytest (changelog)	==9.0.2 → ==9.1.0

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Release Notes

pytest-dev/pytest (pytest)

v9.1.0

Compare Source

pytest 9.1.0 (2026-06-13)

Removals and backward incompatible breaking changes

• #​14533: When using --doctest-modules, autouse fixtures with module, package or session scope that are defined inline in Python test modules (not plugins or conftests) will now possibly execute twice.

  If this is undesirable, move the fixture definition to a conftest.py file if possible.

  Technical explanation for those interested:
  When using --doctest-modules, pytest possibly collects Python modules twice, once as pytest.Module and once as a DoctestModule (depending on the configuration).
  Due to improvements in pytest's fixture implementation, if e.g. the DoctestModule collects a fixture, it is now visible to it only, and not to the Module.
  This means that both need to register the fixtures independently.

Deprecations (removal in next major release)

• #​10819: Added a deprecation warning for class-scoped fixtures defined as instance methods (without @classmethod). Such fixtures set attributes on a different instance than the test methods use, leading to unexpected behavior. Use @classmethod decorator instead -- by yastcher.

  See 10819 and 14011.

• #​12882: Calling request.getfixturevalue() <pytest.FixtureRequest.getfixturevalue> during teardown to request a fixture that was not already requested is now deprecated and will become an error in pytest 10.

  See dynamic-fixture-request-during-teardown for details.

• #​13409: Using non-~collections.abc.Collection iterables (such as generators, iterators, or custom iterable objects) for the argvalues parameter in @pytest.mark.parametrize <pytest.mark.parametrize ref> and metafunc.parametrize <pytest.Metafunc.parametrize> is now deprecated.

  These iterables get exhausted after the first iteration,
  leading to tests getting unexpectedly skipped in cases such as running pytest.main() multiple times,
  using class-level parametrize decorators,
  or collecting tests multiple times.

  See parametrize-iterators for details and suggestions.

• #​13946: The private config.inicfg attribute is now deprecated.
  Use config.getini() <pytest.Config.getini> to access configuration values instead.

  See config-inicfg for more details.

• #​14004: Passing baseid to ~pytest.FixtureDef or nodeid strings to fixture registration APIs is now deprecated. These are internal pytest APIs that are used by some plugins.

  Use the node parameter instead for fixture scoping. This enables more robust node-based
  matching instead of string prefix matching.
  If you've used nodeid=None, pass node=session instead.

  This will be removed in pytest 10.

• #​14335: The method of configuring hooks using markers, deprecated since pytest 7.2, is now scheduled to be removed in pytest 10.
  See hook-markers for more details.

• #​14434: The --pastebin option is now deprecated.
  The same functionality is now available in an external plugin, pytest-pastebin.
  See pastebin-deprecated for more details.

• #​14513: The private FixtureDef.has_location attribute is now deprecated and will be removed in pytest 10.
  See fixturedef-has-location-deprecated for details.

• #​1764: pytest.console_main is now deprecated and will be removed in pytest 10.
  It was never intended for programmatic use; use pytest.main instead.

New features

• #​12376: Added pytest.register_fixture() to register fixtures using an imperative interface.

  This is an advanced function intended for use by plugins.

  Normally, fixtures should be registered declaratively using the @pytest.fixture <pytest.fixture> decorator.
  Pytest looks for these fixture definitions during the collection phase and registers them automatically.
  For some plugin usecases the declarative interface can be cumbersome or unviable, in which case this imperative interface can be used.

• #​14023: Added --report-chars long CLI option.

• #​14371: Added --max-warnings command-line option and max_warnings configuration option to fail the test run when the number of warnings exceeds a given threshold -- by miketheman.

• #​6757: Added the assertion_text_diff_style configuration option, allowing
  string equality failures to be rendered as separate Left: and Right:
  blocks instead of ndiff output.

• #​8395: Added support for ~datetime.datetime and ~datetime.timedelta comparisons with pytest.approx. An explicit abs or rel tolerance as a ~datetime.timedelta is required and relative tolerance is not supported for datetime comparisons -- by hamza-mobeen.

Improvements in existing functionality

• #​11225: pytest.warns now shows "Regex pattern did not match" instead of "DID NOT WARN" when warnings were emitted but the match pattern did not match.

• #​11295: Improved output of --fixtures-per-test by excluding internal-implementation fixtures generated by @pytest.mark.parametrize and similar.

• #​13241: pytest.raises, pytest.warns and pytest.deprecated_call now uses ParamSpec for the type hint to the (old and not recommended) callable overload, instead of Any. This allows type checkers to raise errors when passing incorrect function parameters.
  func can now also be passed as a kwarg, which the type hint previously showed as possible but didn't accept.

• #​13862: Improved the readability of "DID NOT RAISE" error messages by using the exception type's name instead of its repr.

• #​14026: Added test coverage for compiled regex patterns in pytest.raises match parameter.

• #​14137: pytest.ScopeName is now public to allow using it in function signatures.

• #​14342: Marked yield_fixture as deprecated to type checkers using the deprecated decorator. Note it
  has originally been deprecated <yield-fixture-deprecated> in pytest 6.2 already.

• #​14373: Added type annotations for pytest.approx.

• #​14430: When using --setup-show, a space is now printed after the test name (and possibly used fixtures), to separate it from the test result.

• #​14441: Reduced the default number of gc.collect() passes in the unraisableexception plugin from 5 to 1 on CPython, where reference counting makes a single pass sufficient. PyPy retains 5 passes due to object resurrection via __del__. This can noticeably speed up test suites that trigger many pytester runs.

• #​14461: Improved assertion failure explanations for equality comparisons between mapping objects that are not dict instances.

• #​14513: The order in which fixture definitions overriding each other are resolved is now determined first by their visibility in the collection tree rather than by the order in which they are registered.

  A fixture defined for a more specific node (e.g. a module or an item) now always takes precedence over one with the same name defined for a more general node (e.g. the session), even when the more general one was registered later.
  Fixtures with non-comparable visibility or the same visibility keep the existing behavior of "last registered wins".
  This change is supposed to only affect plugins which register multiple fixtures programmatically with the same name.

• #​14524: Add official Python 3.15 support.

• #​1764: Improved argparse program name to show pytest, python -m pytest, or pytest.main() based on how pytest was invoked, making help and error messages clearer.

• #​8265: Emit a PytestCollectionWarning when a module-level __getattr__ returns None for pytestmark instead of raising AttributeError.

  Previously this caused a cryptic TypeError: got None instead of Mark error.
  Now pytest issues a helpful warning and continues collecting the module normally.

Bug fixes

• #​13192: Fixed | (pipe) not being treated as a regex meta-character that needs escaping in pytest.raises(match=...) <pytest.raises>.

• #​13484: Fixed -W option values being duplicated in Config.known_args_namespace.

• #​13626: Fixed function-scoped fixture values being kept alive after a test was interrupted by KeyboardInterrupt or early exit,
  allowing them to potentially be released more promptly.

• #​13784: Fixed capteesys producing doubled output when used with --capture=no (-s).

• #​13817: Fixed a secondary AttributeError masking the original error when an option argument fails to initialize.

• #​13884: Fixed rare internal IndexError caused by builtins.compile being overridden in client code.

• #​13885: Fixed autouse fixtures defined inside a unittest.TestCase class running even when the class is decorated with unittest.skip or unittest.skipIf -- regression since pytest 8.1.0.

• #​13917: unittest.SkipTest is no longer considered an interactive exception, i.e. pytest_exception_interact is no longer called for it.

• #​13963: Fixed subtests running with pytest-xdist when their contexts contain objects that are not JSON-serializable.

  Fixes pytest-dev/pytest-xdist#1273.

• #​14004: Fixed conftest.py fixture scoping when testpaths points outside of the rootdir <rootdir>.

  Previously, fixtures from nested conftest.py files would incorrectly leak to sibling directories
  when using a relative testpaths like ../tests/sdk.

  Conftest fixtures are now parsed during Directory <pytest.Directory> collection, using the Directory node for proper scoping.

• #​14050: Display dictionary differences in assertion failures using the original key insertion order instead of sorted order.

• #​14080: fix missing type annotations on Pytester.makepyfile and Pytester.maketxtfile methods.

• #​14114: An exception from pytest_fixture_post_finalizer no longer prevents fixtures from being torn down, causing additional errors in the following tests.

• #​14161: Fixed monkeypatch.setattr() <pytest.MonkeyPatch.setattr> leaving a stale entry on the undo stack when the underlying setattr() call fails (e.g. on immutable targets), causing an AttributeError crash during teardown.

• #​14214: Fixed -v hint in pytest.raises match diff not working because assertion verbosity was not propagated.

• #​14234: Allow pytest.HIDDEN_PARAM <hidden-param> in @pytest.mark.parametrize(ids=...) <pytest.mark.parametrize ref> typing.

• #​14248: Fixed direct parametrization causing the static fixture closure (as reflected in request.fixturenames <pytest.FixtureRequest.fixturenames>) to omit fixtures that are requested transitively from overridden fixtures.

• #​14263: Unraisable exceptions from finalizers are now collected during pytest_unconfigure, before pytest tears down the warning filters installed for the session. Previously the collection ran from a cleanup callback whose order relative to other plugins' cleanups was not guaranteed, so an active error filter could be removed before the exception surfaced and a late resource leak would pass silently. A -W error filter, or any filter matching pytest.PytestUnraisableExceptionWarning, now promotes these exceptions to failures regardless of plugin cleanup order.

• #​14377: Fixed crash in Config.get_terminal_writer when an assertion fails with the terminalreporter plugin disabled.

• #​14381: Fixed -V (short form of --version) to properly display the current version.

• #​14389: Improved pytest.raises(..., match=...) <pytest.raises> failures to suppress the mismatched exception as a cause of the resulting AssertionError.

• #​14392: Fixed a bug in pytest.raises(match=...) <pytest.raises> "fully escaped" detection, causing the regex diff display to be shown in some instances when the raw string diff display should be shown instead.

• #​14442: Fixed a regression in pytest 9.0 where --strict-markers and --strict-config specified through addopts were silently ignored.

  Note that when targeting pytest >= 9.0, it's nicer to use strict_markers and strict_config, or strict mode <strict mode>.

• #​14456: Fixed pytest.approx not recognizing types with __array_interface__ as numpy-like arrays.

• #​14474: Fixed a regression where -k and -m expressions containing both backslash characters in identifiers and string literal arguments would incorrectly raise a SyntaxError about escaping.

• #​14483: Fixed JUnit XML report incorrectly escaping high Unicode codepoints (supplementary plane characters like emoji) in test failure messages. -- by EternalRights

• #​14492: Fixed Code.getargs() incorrectly including local variable names in the returned argument tuple for functions with *args and/or **kwargs. The method was using co_flags bitmask values (4 and 8) directly as counts instead of converting them to 1 via bool(), and was not accounting for co_kwonlyargcount when var=True.

• #​3697: Logging capture now works for non-propagating loggers.
  Previously only logs which reached the root logger were captured.
  This includes caplog and the "Captured log calls" test reporting.

• #​3850: Fixed JUnit XML report: the tests attribute of the <testsuite> element now always matches the number of <testcase> elements in the file. In some cases (test passes but fails during teardown) the tests attribute would report an incorrect number of testcases in the XML file.

• #​5848: pytest_fixture_post_finalizer is no longer called extra times for the same fixture teardown in some cases.

• #​719: Fixed @pytest.mark.parametrize <pytest.mark.parametrize ref> not unpacking single-element tuple values when using a string argnames with a trailing comma (e.g., "arg,").

  The trailing comma form now correctly behaves like the tuple form ("arg",), treating argvalues as a list of tuples to unpack.

Improved documentation

• #​11022: Document safer alternatives and scope guidance for monkeypatching standard library functions.
• #​11307: Document that @pytest.hookimpl(specname=...) only works for function names starting with pytest_.
• #​13038: Document that doctests do not support parametrized fixtures, including parametrized autouse fixtures.
• #​13155: Clarified how the request fixture provides indirect parametrization values via request.param.
• #​13304: Clarified in the documentation that hook implementations defined in conftest.py files are not available to other plugins during their pytest_addoption() execution, as conftest files are discovered and loaded after builtin and third-party plugins have been initialized. However, initial conftest files themselves can implement pytest_addoption() to add their own command-line options.
• #​13902: Clarified how subtest progress markers are shown in the documentation.
• #​14012: The ini options ref section of the API Reference now specified the type and default value of every configuration option.
• #​14148: Documented a safe pytestconfig.cache access pattern when the
  cacheprovider plugin is disabled.
• #​14303: The documentation is now built with Sphinx >= 9.
• #​14465: Updated the hooks how-to page to link the newhooks.py file in pytest-xdist at tag v3.8.0 instead of an unrelated 2017-era commit under the old layout. Pointing at a tag keeps the example in sync with the version users actually install, while remaining stable when the project's main branch moves on.

Miscellaneous internal changes

• #​14582: Improved the recursion traceback test to exercise all requested traceback styles.

v9.0.3

Compare Source

pytest 9.0.3 (2026-04-07)

Bug fixes

• #​12444: Fixed pytest.approx which now correctly takes into account ~collections.abc.Mapping keys order to compare them.

• #​13634: Blocking a conftest.py file using the -p no: option is now explicitly disallowed.

  Previously this resulted in an internal assertion failure during plugin loading.

  Pytest now raises a clear UsageError explaining that conftest files are not plugins and cannot be disabled via -p.

• #​13734: Fixed crash when a test raises an exceptiongroup with __tracebackhide__ = True.

• #​14195: Fixed an issue where non-string messages passed to unittest.TestCase.subTest() were not printed.

• #​14343: Fixed use of insecure temporary directory (CVE-2025-71176).

Improved documentation

• #​13388: Clarified documentation for -p vs PYTEST_PLUGINS plugin loading and fixed an incorrect -p example.
• #​13731: Clarified that capture fixtures (e.g. capsys and capfd) take precedence over the -s / --capture=no command-line options in Accessing captured output from a test function <accessing-captured-output>.
• #​14088: Clarified that the default pytest_collection hook sets session.items before it calls pytest_collection_finish, not after.
• #​14255: TOML integer log levels must be quoted: Updating reference documentation.

Contributor-facing changes

• #​12689: The test reports are now published to Codecov from GitHub Actions.
  The test statistics is visible on the web interface.

  -- by aleguy02

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