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[3.13] gh-132308: prevent TracebackException swallowing attributes of a falsey Exception or ExceptionGroup (GH-132363) (#132725)

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gh-132308: prevent `TracebackException` swallowing attributes of a falsey `Exception` or `ExceptionGroup` (GH-132363)
(cherry picked from commit 69cda31261)

Co-authored-by: Duprat <yduprat@gmail.com>
This commit is contained in:
Miss Islington (bot) 2025-04-30 09:19:53 +02:00 • committed by GitHub
parent 7998f998b2
commit dfaa384991
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3 changed files with 57 additions and 3 deletions
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6
Lib/traceback.py
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@ -1116,7 +1116,7 @@ class TracebackException:
queue = [(self, exc_value)]
while queue:
te, e = queue.pop()
if (e and e.__cause__ is not None
if (e is not None and e.__cause__ is not None
and id(e.__cause__) not in _seen):
cause = TracebackException(
type(e.__cause__),
@ -1137,7 +1137,7 @@ class TracebackException:
not e.__suppress_context__)
else:
need_context = True
if (e and e.__context__ is not None
if (e is not None and e.__context__ is not None
and need_context and id(e.__context__) not in _seen):
context = TracebackException(
type(e.__context__),
@ -1152,7 +1152,7 @@ class TracebackException:
else:
context = None
if e and isinstance(e, BaseExceptionGroup):
if e is not None and isinstance(e, BaseExceptionGroup):
exceptions = []
for exc in e.exceptions:
texc = TracebackException(