Get PyCharm to know what classes are mixin for

Question

Our application has set of complex form wizards. To avoid code duplication I created several mixins.

The problem is that PyCharm highlights mixin methods with Unre

Answer 1

If you are creating Mixin, for, let's say ClassSub, which is subclass of ClassSuper, you can implement Mixins this way:

class Mixin1(ClassSuper):
    pass


class Mixin2(ClassSuper):
    pass

and then use them like:

class ClassSub(Mixin1, Mixin2):
    pass

That way I use some mixins for models in Django. Also, django-extensions uses similar pattern (gives models that are actually mixins). Basically, this way you don't have to inherit ClassSuper, because it's "included" in every of your mixins.

Most important - PyCharm works like a charm this way.