E0202: (method-hidden) false positive when mixed member/method

[socketpair]

Generates false positive:

class Parent:
    def __init__(self):
        self.__check_should_start = None

class Child(Parent):
    def __check_should_start(self):
        pass

works OK:

class Parent:
    def __check_should_start(self):
        pass

class Child(Parent):
    def __check_should_start(self):
        pass

$ pylint-3 --version
pylint 2.4.4
astroid 2.3.3
Python 3.8.6 (default, Sep 25 2020, 00:00:00) 
[GCC 10.2.1 20200723 (Red Hat 10.2.1-1)]

[hippo91]

@socketpair thanks for the report.
However it don't seem to be a false positive:

pylint --help-msg method-hidden
:method-hidden (E0202): *An attribute defined in %s line %s hides this method*
  Used when a class defines a method which is hidden by an instance attribute
  from an ancestor class or set by some client code. This message belongs to
  the classes checker.

It seems that the help message correspond exactly to the situation.
I close this issue but do not hesitate to answer if you think i am wrong. I wiil reopen the issue if it is the case.

[socketpair]

NO! It does not hide ! Since they are PRIVATE variables. And of course they are different. If it were ._example (i.e. protected var) it would be OK to raise the warning.

[hippo91]

@socketpair thanks. I seems a bug then.

[hippo91]

For anyone wanting to contribute, please have a look to the classes.py module in the method visit_functiondef.