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gh-140228: Linecache source is unavailable for frozen modules when global modules is None #140377

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gh-140228: Linecache source is unavailable for frozen modules when global modules is None #140377

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5 changes: 4 additions & 1 deletion Lib/linecache.py
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Original file line number Diff line number Diff line change
Expand Up @@ -123,9 +123,12 @@ def updatecache(filename, module_globals=None):
if _source_unavailable(filename):
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
# from the module globals.
if module_globals is None:
return []

fullname = module_globals.get('__file__')
if fullname is None:
return []
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