Python中的前向类声明

from typing import TYPE_CHECKING

if TYPE_CHECKING:
    from another_module import AnotherClass  # 前向类声明


class MyClass:
    def __init__(self, another_class: 'AnotherClass'):
        self.another_class = another_class


# 在另一个模块中
class AnotherClass:
    def __init__(self, my_class: 'MyClass'):
        self.my_class = my_class