从一个类访问另一个类的成员

class MyClass:
    def __init__(self):
        self.__private_var = 10

    def get_private_var(self):
        return self.__private_var

class AnotherClass:
    def access_private_var(self):
        obj = MyClass()
        print(obj.get_private_var())  # 通过公共方法访问私有成员

class Parent:
    def method(self):
        print("Parent method")

class Child(Parent):
    def method(self):
        super().method()  # 调用父类的方法
        print("Child method")

class ClassA:
    def __init__(self, class_b):
        self.class_b = class_b

class ClassB:
    def __init__(self):
        self.class_a = None

    def set_class_a(self, class_a):
        self.class_a = class_a

# 解决循环依赖
class_b = ClassB()
class_a = ClassA(class_b)
class_b.set_class_a(class_a)