bpo-38735: Don't fail when importing from / with sys.pycache_prefix set #30456
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This PR is stale because it has been open for 30 days with no activity. |
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You can test it without writing a file. >>> from importlib.util import cache_from_source
>>> import os
>>> os.chdir('/')
>>> cache_from_source('spam.py')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
cache_from_source('spam.py')
~~~~~~~~~~~~~~~~~^^^^^^^^^^^
File "<frozen importlib._bootstrap_external>", line 558, in cache_from_source
IndexError: string index out of range |
brettcannon
approved these changes
Feb 27, 2024
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Thanks @encukou for the PR 🌮🎉.. I'm working now to backport this PR to: 3.13. |
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Thanks @encukou for the PR 🌮🎉.. I'm working now to backport this PR to: 3.14. |
miss-islington
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Aug 18, 2025
…et (pythonGH-30456) (cherry picked from commit d8a9466) Co-authored-by: Petr Viktorin <encukou@gmail.com> Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
miss-islington
pushed a commit
to miss-islington/cpython
that referenced
this pull request
Aug 18, 2025
…et (pythonGH-30456) (cherry picked from commit d8a9466) Co-authored-by: Petr Viktorin <encukou@gmail.com> Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
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GH-137905 is a backport of this pull request to the 3.13 branch. |
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GH-137906 is a backport of this pull request to the 3.14 branch. |
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This fixes the issue, but testing it would require putting a file in the root directory.
https://bugs.python.org/issue38735
gh-#82916