pylint does not recognize potential undefined variables

[pylint-bot]

Originally reported by: Mirko Dziadzka (BitBucket: mirkodziadzka, GitHub: @MirkoDziadzka?)

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The following code should generate a warning, that the variable res may be undefined in the finally clause

#!python
try:
    # throw exception here to make res undefined
    res = 42
finally:
    print res

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• Bitbucket: https://bitbucket.org/logilab/pylint/issue/85

[pylint-bot]

Original comment by Sylvain Thénault (BitBucket: sthenault, GitHub: @sthenault?):

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see also issue #12

[dpinol]

this has been open 6 years. Is it on the roadmap?

thanks

[Pierre-Sassoulas]

Here's the test case actualized for python3:

try:
    # throw exception here to make res undefined
    res = 1 / 0
    res = 42
finally:
    print(res)

@dpinol this require control-flow which pylint does not have. Apparently no one worked on it yet, I'd be glad to review a merge request that fix this.