Documented variable in Python class not recognized in subclasses

[lelegard]

Consider a Python class with a documented field. In all subclasses of that base class, the inherited field is not recognized as such. Instead, doxygen considers it as a distinct field for each subclass and complains about the absence of documentation in all subclasses.

## Class
class C1:
    ## Constructor
    def __init__(self):
        ## Variable
        self.a = 'C1'
    ## Method
    def test(self):
        print(self.a)

## Subclass
class C2(C1):
    ## Constructor
    def __init__(self):
        super().__init__()
        self.a = 'C2'

x = C2()
x.test()

Doxygen output:

$ ../doxygen-master/build/bin/doxygen 
test.py:16: warning: Member a (variable) of class test.C2 is not documented.
$
$ ../doxygen-master/build/bin/doxygen --version
1.9.8 (27ba0983fdcc4b7b836e06fef90e05400d8351c8)

In fact, the member a in line 16 of subclass C2 is the inherited member from class C1 which has already been documented as part of C1.

The HTML output for C2 incorrectly lists a field a in addition to the inherited one from C1:

Reproduction: doxybug6.zip

[albert-github]

Currently doxygen does, apparently, not do anything with this overloading in python which results in the fact that the variables a are the same.