Pylint hangs when running on a module that has type annotations from returns
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调研方向
Reproduce the hang with the supplied test.py example and the listed Python, pylint, astroid, and returns versions. Start by tracing the astroid.decorators.raise_if_nothing_inferred generator while running pylint, then inspect the surrounding type-inference path. Done means pylint completes on the example without hanging and a regression test covers it.
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描述
I've noticed pylint is hanging (vscode's python plugin started to consume 100% CPU) when trying to lint a module that has type annotations from returns library.
Consider the following test.py:
from returns.maybe import Maybe, Some
x: Maybe[int] = Some(1)
Running pylint test.py will hang forever.
Not sure if the problem is with returns or pylint itself (or maybe something with my local setup, tried both with my regular pylint config and without it though). Didn't spend much time debugging it, but sometimes I noticed it hangs in astroid.decorators.raise_if_nothing_inferred generator. Does anyone experience the same?
python: 3.7.9, 3.9.0
pylint: 2.6.0
astroid: 2.4.2
returns: 0.15.0
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