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gh-140228: Avoid making unnecessary syscalls in linecache for frozen modules (#140377)

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tconley1428 2025-10-28 23:06:22 -07:00 • committed by GitHub
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5
Lib/linecache.py
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@ -123,9 +123,12 @@ def updatecache(filename, module_globals=None):
if _source_unavailable(filename): if _source_unavailable(filename):
return [] return []
if filename.startswith('<frozen ') and module_globals is not None: if filename.startswith('<frozen '):
# This is a frozen module, so we need to use the filename # This is a frozen module, so we need to use the filename
# from the module globals. # from the module globals.
if module_globals is None:
return []
fullname = module_globals.get('__file__') fullname = module_globals.get('__file__')
if fullname is None: if fullname is None:
return [] return []

1
Misc/NEWS.d/next/Library/2025-10-28-17-43-51.gh-issue-140228.8kfHhO.rst Normal file
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@ -0,0 +1 @@
Avoid making unnecessary filesystem calls for frozen modules in :mod:`linecache` when the global module cache is not present.