False positive no-member when using cls to instantiate an object in super()

[yanqd0]

Steps to reproduce

Given a file a.py:

# pylint: disable=too-few-public-methods, missing-module-docstring
# pylint: disable=missing-class-docstring, missing-function-docstring
# pylint: disable=invalid-name
class A:
    a = 1

    @classmethod
    def create(cls):
        return cls()


class B(A):
    b = 2

    @classmethod
    def create(cls):
        return super().create()


b = B.create()
print(b.b)

Current behavior

Result of pylint a.py:

$ pylint a.py
************* Module a
a.py:21:6: E1101: Instance of 'A' has no 'b' member; maybe 'a'? (no-member)

Expected behavior

No error or warning.

pylint --version output

Result of pylint --version output:

pylint 2.7.2
astroid 2.5.1
Python 3.8.5 (default, Jan 27 2021, 15:41:15) 
[GCC 9.3.0]

[hippo91]

@yanqd0 thanks for the report.

[jacobtylerwalls]

There are a lot of tickets for no-member and subclassing: #4241, #3805, #3143, #3162, and more. I haven't carefully checked to see whether they're all more or less a result of the same root cause.

[jacobtylerwalls]

They probably are: see pylint-dev/astroid#457

[jacobtylerwalls]

Duplicate of #981 and pylint-dev/astroid#457