Sourced from pytest's releases.
8.4.1
pytest 8.4.1 (2025-06-17)
Bug fixes
#13461: Corrected
_pytest.terminal.TerminalReporter.isattyto support being called as a method. Before it was just a boolean which could break correct code when using-o log_cli=true).#13477: Reintroduced
pytest.PytestReturnNotNoneWarning{.interpreted-text role="class"} which was removed by accident in pytest [8.4]{.title-ref}.This warning is raised when a test functions returns a value other than
None, which is often a mistake made by beginners.See
return-not-none{.interpreted-text role="ref"} for more information.#13497: Fixed compatibility with
Twisted 25+.Improved documentation
- #13492: Fixed outdated warning about
faulthandlernot working on Windows.8.4.0
pytest 8.4.0 (2025-06-02)
Removals and backward incompatible breaking changes
#11372: Async tests will now fail, instead of warning+skipping, if you don't have any suitable plugin installed.
#12346: Tests will now fail, instead of raising a warning, if they return any value other than None.
#12874: We dropped support for Python 3.8 following its end of life (2024-10-07).
#12960: Test functions containing a yield now cause an explicit error. They have not been run since pytest 4.0, and were previously marked as an expected failure and deprecation warning.
See
the docs <yield tests deprecated>{.interpreted-text role="ref"} for more information.Deprecations (removal in next major release)
- #10839: Requesting an asynchronous fixture without a [pytest_fixture_setup]{.title-ref} hook that resolves it will now give a DeprecationWarning. This most commonly happens if a sync test requests an async fixture. This should have no effect on a majority of users with async tests or fixtures using async pytest plugins, but may affect non-standard hook setups or
autouse=True. For guidance on how to work around this warning seesync-test-async-fixture{.interpreted-text role="ref"}.New features
#11538: Added
pytest.RaisesGroup{.interpreted-text role="class"} as an equivalent topytest.raises{.interpreted-text role="func"} for expectingExceptionGroup{.interpreted-text role="exc"}. Also addspytest.RaisesExc{.interpreted-text role="class"} which is now the logic behindpytest.raises{.interpreted-text role="func"} and used as parameter topytest.RaisesGroup{.interpreted-text role="class"}.RaisesGroupincludes the ability to specify multiple different expected exceptions, the structure of nested exception groups, and flags for emulatingexcept* <except_star>{.interpreted-text role="ref"}. Seeassert-matching-exception-groups{.interpreted-text role="ref"} and docstrings for more information.#12081: Added
capteesys{.interpreted-text role="fixture"} to capture AND pass output to next handler set by--capture=.#12504:
pytest.mark.xfail{.interpreted-text role="func"} now acceptspytest.RaisesGroup{.interpreted-text role="class"} for theraisesparameter when you expect an exception group. You can also pass apytest.RaisesExc{.interpreted-text role="class"} if you e.g. want to make use of thecheckparameter.#12713: New [--force-short-summary]{.title-ref} option to force condensed summary output regardless of verbosity level.
... (truncated)
8d99211
Prepare release version 8.4.15dc5880
docs: update pytest.ini addopts example to use separate -p entries (#13529)
(...d0c7ed0
Reintroduce PytestReturnNotNoneWarning (#13495)
(#13527)a1b3a78
Fix compatibility with Twisted 25 (#13502)
(#13531)4c161ab
pytester: avoid unraisableexception gc collects in inline runs to speed
up te...a86ee09
Fix typo in parametrize.rst (#13514)
(#13516)1a0581b
Remove outdated warning about faulthandler_timeout on Windows (#13492)
(#13493)4e631a7
Merge pull request #13486
from hosmir/fixtypo (#13487)b49745e
fix: support TerminalReporter.isatty being called (#13462)
(#13483)cc5ceed
RELEASING: remove pytest mailing list (#13472)
(#13473)