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test_pdb fails: Unexpected sys.path[0] behavior with PYTHONSAFEPATH set #123121

Closed as not planned
Closed as not planned
test_pdb fails: Unexpected sys.path[0] behavior with PYTHONSAFEPATH set#123121
Labels
testsTests in the Lib/test dirtype-bugAn unexpected behavior, bug, or error

Description

@xncbf
xncbf
opened on Aug 18, 2024

Bug report

Bug description:

Issue:
The test_safe_path function in test_pdb.py is failing. When PYTHONSAFEPATH is set to '1', sys.path[0] still includes the current working directory, which is unexpected.

Steps to Reproduce:

  1. Run the Python test suite, specifically focusing on test_pdb.
  2. Observe that test_safe_path fails with the following error:
AssertionError: 'sys.path[0] is /Users/joon/projects/cpython/build/test_python_68610æ/tempcwd' unexpectedly found in '> /Users/joon/projects/cpython/build/test_python_68610æ/tempcwd/main.py(2)<module>()
-> import sys
(Pdb) sys.path[0] is /Users/joon/projects/cpython/build/test_python_68610æ/tempcwd/$PYTHONPATH
The program finished and will be restarted
> /Users/joon/projects/cpython/build/test_python_68610æ/tempcwd/main.py(2)<module>()
-> import sys
(Pdb) 
'

Expected Behavior:
When PYTHONSAFEPATH is set to '1', sys.path[0] should not include the current working directory.

Actual Behavior:
sys.path[0] includes the current working directory, and there's an unexpected $PYTHONPATH appended to the path.

Environment:

  • Python version: 3.14.0
  • OS: macos sonoma 14.1.1 (apple silicon)

#121724

CPython versions tested on:

CPython main branch

Operating systems tested on:

macOS

Activity

  1. xncbf
    added
    type-bugAn unexpected behavior, bug, or error
    on Aug 18, 2024

  2. Eclips4 commented on Aug 18, 2024

    @Eclips4
    Eclips4
    on Aug 18, 2024
    Member

    cc @gaogaotiantian

  3. picnixz
    added
    testsTests in the Lib/test dir
    on Aug 18, 2024
  4. picnixz
    changed the title [-][BUG] test_pdb fails: Unexpected sys.path[0] behavior with PYTHONSAFEPATH set[/-] [+] test_pdb fails: Unexpected sys.path[0] behavior with PYTHONSAFEPATH set[/+] on Aug 18, 2024
  5. picnixz
    changed the title [-] test_pdb fails: Unexpected sys.path[0] behavior with PYTHONSAFEPATH set[/-] [+]test_pdb fails: Unexpected sys.path[0] behavior with PYTHONSAFEPATH set[/+] on Aug 18, 2024

  6. gaogaotiantian commented on Aug 18, 2024

    @gaogaotiantian
    gaogaotiantian
    on Aug 18, 2024
    Member

    How did you run test_safe_path with PYTHONSAFEPATH = 1? It should be skipped (not that it's what I had in mind when I wrote the test).

        @unittest.skipIf(sys.flags.safe_path,
                     'PYTHONSAFEPATH changes default sys.path')
    def _run_pdb(self, pdb_args, commands,
                 expected_returncode=0,
                 extra_env=None):

  7. xncbf commented on Aug 19, 2024

    @xncbf
    xncbf
    on Aug 19, 2024
    SponsorContributorAuthor
    ./python.exe -m test test_pdb
./python.exe -m test test_pdb --forever

    The above command fails when executed after the build. No other preliminary work is needed.

  8. gaogaotiantian commented on Aug 19, 2024

    @gaogaotiantian
    gaogaotiantian
    on Aug 19, 2024
    Member

    Are you able to repro this with

    ./python.exe -m test test_pdb -m test_safe_path

    Can you copy/paste the full output? Is it because of mac that the test actually ran?

  9. gaogaotiantian
    added
    pendingThe issue will be closed if no feedback is provided
    on Oct 24, 2024
  10. picnixz
    removed
    pendingThe issue will be closed if no feedback is provided
    on Dec 2, 2024

  11. picnixz commented on Dec 2, 2024

    @picnixz
    picnixz
    on Dec 2, 2024
    Member

    Closing as cannot reproduce since the OP did not reply for a while.

  12. picnixz
    closed this as not plannedon Dec 2, 2024
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