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bpo-17735: inspect.findsource now raises OSError when co_lineno is out of range (GH-23633)

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This can happen when a file was edited after it was imported.
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Irit Katriel 2020-12-04 21:22:03 +00:00 • committed by GitHub
parent 8d4f57dbd1
commit 2e0760bb2e
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3 changed files with 21 additions and 1 deletions
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7
Lib/inspect.py
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@ -868,7 +868,12 @@ def findsource(object):
lnum = object.co_firstlineno - 1
pat = re.compile(r'^(\s*def\s)|(\s*async\s+def\s)|(.*(?<!\w)lambda(:|\s))|^(\s*@)')
while lnum > 0:
if pat.match(lines[lnum]): break
try:
line = lines[lnum]
except IndexError:
raise OSError('lineno is out of bounds')
if pat.match(line):
break
lnum = lnum - 1
return lines, lnum
raise OSError('could not find code object')