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False positive possibly-undefined in a combination of try and loop #17055
Description
Checking the following
try:
while True:
try:
hello = 1
except RuntimeError:
break
print(hello)
except RuntimeError:
pass
finally:
passusing mypy --enable-error-code possibly-undefined (version 1.9.0) results in:
error: Name "hello" may be undefined [possibly-undefined]
I guess this is a false positive.
Reacted by Bosco Yung
Activity
Fix possibly-undefined false-positive with nesting (#20276)
hauntsaninja commentedon Apr 22, 2026
Fixed by #20276