Question

I am trying to do the following in a bit of python code:

class Parent:
    class Child(Parent):
        pass

And it does not work. Is there any python syntax I can use to achieve the same result?

Thanks.

Answer 1

You can’t do that because at the point where Child is being defined, Parent is not defined yet (definition in progress). Nested classes are not usually used in Python, you can just declare different classes in the same module. However, if you absolutely need to achieve the outlined setup, you can do this:

class Parent: pass
class Child (Parent): pass

Parent.Child = Child
del Child