--amend

Author: elazarg

mypy/subtypes.py

@@ -274,6 +274,7 @@ def visit_type_type(self, left: TypeType) -> bool:
         if isinstance(right, TypeType):
             return is_subtype(left.item, right.item)
         if isinstance(right, CallableType):
+            # This is unsound, we don't check the __init__ signature.
             return is_subtype(left.item, right.ret_type)
         if isinstance(right, Instance):
             if right.type.fullname() in ['builtins.object', 'builtins.type']: