False positive unused-private-member when using __new__

[larme]

This may relate to #4657

Steps to reproduce

Given a file sample2.py:

class UnusedPrivateMember:
    """unused-private-member (W0238)"""

    def __new__(cls, func, *args):
        obj = super(UnusedPrivateMember, cls).__new__(cls)
        obj.func = func
        obj.__args = args
        return obj

    def exec(self):
        return self.func(*self.__args)

Current behavior

Result of pylint sample2.py:

************* Module sample2
sample2.py:7:8: W0238: Unused private member `UnusedPrivateMember.__args` (unused-private-member)

Expected behavior

I would expect no unused-private-member warning

pylint --version output

Result of pylint --version output:

pylint 3.0.0-a4
astroid 2.6.2
Python 3.7.3 (default, Jan 22 2021, 20:04:44)
[GCC 8.3.0]

[yushao2]

I'll look into this over the course of next week