[unused-private-member] false positive for property()

[stanislavlevin]

Bug description

Given a file a.py:

# pylint: disable=missing-docstring,too-few-public-methods
class Prop:
    def __get_prop(self):
        pass

    def __set_prop(self, value):
        pass

    def __del_prop(self):
        pass

    prop = property(__get_prop, __set_prop, __del_prop)

(Configuration)

Using the following configuration:

Command used

Result of pylint a.py:

************* Module a
a.py:3:4: W0238: Unused private member `Prop.__get_prop(self)` (unused-private-member)
a.py:6:4: W0238: Unused private member `Prop.__set_prop(self, value)` (unused-private-member)
a.py:9:4: W0238: Unused private member `Prop.__del_prop(self)` (unused-private-member)

-----------------------------------
Your code has been rated at 6.25/10

(Expected behavior)

There should be no errors.

(Version affected)

pylint 2.9.0+ (including today's main).

(OS / Environment)

ALTLinux

(Additional dependencies)

No response

[yushao2]

looking into this, thanks for the report!

[spagh-eddie]

@yushao2 I have had a similar issue, and it seems to me it can be generalized to variables referenced in the class body without dot-methods.

# test.py 
from functools import partialmethod
class Foo:
    def __bar(self, x):
        print(x)
    fizz = partialmethod(__bar, 'fizz')
foo = Foo()
foo.fizz()

$ python test.py
fizz

$ pylint --version
pylint 2.10.2
astroid 2.7.2
Python 3.7.5 (default, Aug 13 2020, 09:55:33) 
[Clang 11.0.3 (clang-1103.0.32.62)]