When iterating over __dict__ inside a classmethod, accessing __annotations causses RuntimeError: dictionary changed size during iteration.
This only seems to affect Python 3.10.x on a Ubuntu system.

The following can be used to reproduce this issue:

class ExampleCls:
    @classmethod
    def iter_cls(cls):
        for name, val in cls.__dict__.items():
            print(cls.__annotations__)


This can be fixed for this Example by calling  _ = cls.__annotations__ before iterating over the __dict__