Don't warn about exception aliases on Python 3

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#5,080 1 comment 4 reactions 0 assignees View on GitHub

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
35/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
python
Domain
tooling

Research direction

Reproduce the reported Python 3 snippet and inspect mypy's handling of exception aliases and assignments after an except block. Done means the assignment to e is no longer incorrectly flagged while the existing exception-alias behavior remains checked.

Written by the indexing model from the issue text.

Description

bug false-positive priority-2-low

I expect this just needs checking for, but this is incorrectly flagged:

try:
    raise Exception()
except Exception as e:
    pass
e = 4  # error: Assignment to variable 'e' outside except: block
Dominant language
Python
Stars
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Forks
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Avg merge
1d 18h
Merged PRs (30d)
54

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