Ross Conyers

[python] Fix Circular imports on inherited discriminators.

2

This is a duplicate of #16809 as that seems to have been abandoned by the author. ### PR checklist - [x] Read the [contribution guidelines](https://github.com/openapitools/openapi-generator/blob/master/CONTRIBUTING.md). - [x] Pull Request title...

Functions declared in a custom serializer base class are not detected correctly and are flagged by pyright. A simple example is: ``` from rest_framework import serializers class RequestSerializer(serializers.Serializer): def do_something(self):...