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Test collection is 10x slower on 9.1.1 compared to 9.0.3

Status: Open.

#14942 In pytest-dev/pytest;

· mikicz opened on Aug 26, 2026

__tracebackhide__ can retain hidden frames sharing a source location in ExceptionGroup tracebacks

Status: Open.

#14940 In pytest-dev/pytest;

· Amine-LG opened on Aug 26, 2026

Retention and cleanup are user-scoped, not project-scoped: cross-project eviction and lossy provenance under /tmp/pytest-of-<user>/

Status: Open.

#14935 In pytest-dev/pytest;

· jawauntb opened on Aug 25, 2026

Mark autouse fixtures in --setup-show (and friends) and --fixtures-per-test

topic: fixturesanything involving fixtures directly or indirectlyanything involving fixtures directly or indirectly

topic: reportingrelated to terminal output and user-facing messages and errorsrelated to terminal output and user-facing messages and errors

Status: Open.

#14920 In pytest-dev/pytest;

· The-Compiler opened on Aug 21, 2026

Shared PytestWarning instances in deprecated.py accumulate tracebacks under -W error

Status: Open.

#14912 In pytest-dev/pytest;

· graingert opened on Aug 19, 2026

MonkeyPatch records stale undo entries when delattr/setitem/delitem fails

Status: Open.

#14909 In pytest-dev/pytest;

· Amine-LG opened on Aug 19, 2026

"ERROR at" test case name headings ambiguous if they use the same test case function name

Status: Open.

#14902 In pytest-dev/pytest;

· cswrd opened on Aug 18, 2026

Fixture discovery scans every attribute of every registered plugin, on every Config

Status: Open.

#14877 In pytest-dev/pytest;

· RonnyPfannschmidt opened on Aug 14, 2026

use expand=True for pformat(...) in python 3.15+

type: enhancementnew feature or API change, should be merged into features branchnew feature or API change, should be merged into features branch

Status: Open.

#14859 In pytest-dev/pytest;

· asottile opened on Aug 11, 2026

Expose FixtureFunctionDefinition as part of the public API

good first issueeasy issue that is friendly to new contributoreasy issue that is friendly to new contributor

topic: fixturesanything involving fixtures directly or indirectlyanything involving fixtures directly or indirectly

Status: Open.

#14853 In pytest-dev/pytest;

· adamtheturtle opened on Aug 11, 2026

pytester's sys.modules snapshotting causes improper shutdown of multiprocessing.resource_tracker

Status: Open.

#14841 In pytest-dev/pytest;

· TTsangSC opened on Aug 8, 2026

pytest.mark.skipif silently ignores extra keyword args

topic: marksrelated to marks, either the general marks or builtinrelated to marks, either the general marks or builtin

Status: Open.

#14839 In pytest-dev/pytest;

· The-Compiler opened on Aug 7, 2026