我的问题：我对AnyType的使用（正如我在下面定义的那样）是否正确？目标是AnyType接受任何类对象，但是类对象或函数类型的实例或其他不属于type类型的事物应该被拒绝。
详细说明：
我有一个看起来像这样的课程：
MixinSubclsType = Type["ChildRegistryMixin"]
AnyType = Type[type] # <- is this correct?
class ChildRegistryMixin:
"""Mixin class that creates classes which track subclasses.
Each new child class will track its own children."""
_subclasses: Dict[Any, MixinSubclsType] = dict()
_make_reg_key: Callable[[AnyType], Any]] = lambda subcls: getattr(subcls, "__name__")
def __init_subclass__(subcls,
make_reg_key: Optional[Callable[[AnyType], Any]]] = None,
**kwargs) -> None:
# implementation here
Type[type]是告诉类型检查器的正确方法lambda应该只接受类对象吗？
由于更多信息有时会好于更少，因此以下是整个实施。
class ChildRegistryMixin:
"""Mixin class that creates classes which track subclasses.
Each new child class will track its own children.
Usage example 1:
class RegisteredByName(ChildRegistryMixin): ...
assert ChildRegistryMixin._subclasses["RegisteredByName"] is RegisteredByName
Usage example 2:
valid_lookup = dict(ClassName="othername")
class RegisteredByPop(ChildRegistryMixin,
make_reg_key=lambda subcls:
valid_lookup.pop(subcls.__name__)):
pass
class ClassName(RegisteredByPop): ...
assert RegisteredByPop._subclasses["othername"] is ClassName
class InvalidName(RegisteredByPop): ... # <-- ERROR!
"""
_subclasses: Dict[Any, MixinSubclsType] = dict()
_make_reg_key: Callable([AnyType], Any) = lambda subcls: getattr(subcls, "__name__")
def __init_subclass__(subcls,
make_reg_key: Optional[Callable([AnyType], Any)] = None,
**kwargs) -> None:
super().__init_subclass__(**kwargs)
# for later child classes of the new class
subcls._subclasses = dict()
# child added to the reg of closest parent that is a subclass of CRB
for parent_cls in subcls.mro()[1:]:
if issubclass(parent_cls, ChildRegistryMixin):
break
else:
parent_cls = ChildRegistryMixin
# make the key
key = parent_cls._make_reg_key(subcls)
# can't have multiple child classes with same key
if key not in parent_cls._subclasses:
parent_cls._subclasses[key] = subcls
else:
raise ChildRegistryError(f"Attempted to overwrite the "
f"child class key {key!r} in the "
f"{parent_cls.__name__} registry")
# inherit the subclass' key maker from parent if one was not provided
subcls._make_reg_key = parent_cls._make_reg_key if make_reg_key is None\
else make_reg_key