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test_import leaves files in the current directory #155731

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test_import leaves files in the current directory#155731
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3.13only security fixes3.14bugs and security fixes3.15bugs and security fixes3.16new features, bugs and security fixestestsTests in the Lib/test dirtype-bugAn unexpected behavior, bug, or error

Description

@serhiy-storchaka
serhiy-storchaka
opened on Aug 13, 2026

Bug report

Three tests in test_import leave files in the current directory:

$ ./python -m test --fail-env-changed test_import -m test.test_import.ImportTests.test_import
Warning -- files was modified by test_import
Warning --   Before: []
Warning --   After:  ['__pycache__/']
Result: ENV CHANGED
  • ImportTests.test_import and ImportTracebackTests.test_unencodable_filename import a temporary script and do not remove the __pycache__ directory created for it.
  • ImportTests.test_import_in_del_does_not_crash creates a script with make_script() and never unlinks it, leaving @test_<pid>_tmpæ.py.

Running the whole file passes: the leftovers are removed by other tests before the environment is checked.

Linked PRs

Activity

  1. serhiy-storchaka
    added
    type-bugAn unexpected behavior, bug, or error
    testsTests in the Lib/test dir
    3.13only security fixes
    3.14bugs and security fixes
    3.15bugs and security fixes
    3.16new features, bugs and security fixes
    on Aug 13, 2026

  2. nightcityblade commented on Aug 13, 2026

    @nightcityblade
    nightcityblade
    on Aug 13, 2026

    Hi, I'd like to work on this. I'll submit a PR shortly.

  3. serhiy-storchaka
    added a commit that references this issue on Aug 13, 2026

    gh-155731: Clean up files left by test_import (GH-155735)

    b0ba60e
  4. serhiy-storchaka
    closed this as completedon Aug 13, 2026
  5. serhiy-storchaka
    added 2 commits that reference this issue on Aug 13, 2026

    [3.13] gh-155731: Clean up files left by test_import (GH-155735) (GH-…

    de63e6e

    [3.14] gh-155731: Clean up files left by test_import (GH-155735) (GH-…

    23bba2f
  6. mbeijen
    added a commit that references this issue on Aug 14, 2026

    pythongh-155731: Clean up files left by test_import (pythonGH-155735)

    d6ff6e2
  7. serhiy-storchaka
    added a commit that references this issue on Oct 10, 2026

    [3.15] gh-155731: Clean up files left by test_import (GH-155735) (GH-…

    b3fab86
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    3.13only security fixes3.14bugs and security fixes3.15bugs and security fixes3.16new features, bugs and security fixestestsTests in the Lib/test dirtype-bugAn unexpected behavior, bug, or error

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