false positive no-member for static derived member

[przecze]

I know there are problems for dynamically generated members, but in this case everything is static.

Steps to reproduce

execute pylint on this code:

class Base:
    label: str

class Derived(Base):
    label = "I exist!"

print(Derived.label)

Current behavior

test.py:7:6: E1101: Class 'Derived' has no 'label' member (no-member)

reported by pylint

Expected behavior

No no-member error reported by pylint

pylint --version output

~:$ pylint --version
pylint 2.6.0
astroid 2.4.2
Python 3.8.2 (default, Jul 16 2020, 14:00:26) 
[GCC 9.3.0]

tested also on

~:$ pylint --version
pylint 2.4.4
astroid 2.3.3
Python 3.8.2 (default, Jul 16 2020, 14:00:26) 
[GCC 9.3.0]

[hippo91]

@przecze thanks for the report.
I can reproduce it. An interesting fact is that the code below doesn't trigger the bug.

class Base:
    pass

class Derived(Base):
    label = "I exist!"

print(Derived.label)