my_var: self.SubClass type hint returns Variable not allowed in type expression

[turbonate]

Bug report

Bug description:

class MyClass:
    class MyTreeSubClass:
        def __init___():
            self.children = []
        def addchild(foo):
            self.children.append(foo)
        def postorder_traversal():
            for child in children:
               yield from child.postorder_traversal()
            yield self

    def bar():
        baz = self.MyTreeSubClass()
        #init baz logic here
        for node in baz.postorder_traversal():
            node: self.MyTreeSubClass #Variable not allwed in type expression
            node.what_even_am_i()

I can't do a self.SubClass type hint because self is not allowed in type hinting.

this line is the issue:
node: self.MyTreeSubClass #Variable not allwed in type expression

CPython versions tested on:

3.12

Operating systems tested on:

Windows

[sobolevn]

Use : MyClass.MyTreeSubClass to annotate node. This is not a bug in CPython.

1. It is typechecker specific (which live in other repos)
2. It seems like a correct suggestion to me

I hope this helps :)

[turbonate]

Thank you. Don't know why I didn't think of MyClass.MyTreeSubClass