The flow of the program is not taken in consideration for no-member and other checks

[pylint-bot]

Originally reported by: Claudiu Popa (BitBucket: PCManticore, GitHub: @PCManticore)

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Due to how pylint is implemented, by using the visitor pattern, the following code will not be detected as problematic, since when visit_getattr will be called, x will be unknown.

We should consider changing this for Pylint 2.0, where vising the nodes will consider the flow of the program. There's a big bunch of errors that are currently undetected due to this.

def test(x):
   return x.lala # not detected

test(1) 

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• Bitbucket: https://bitbucket.org/logilab/pylint/issue/623