如何在两个不同的类方法中使用变量？

class MyClass:
    def __init__(self):
        self.my_variable = "Hello"

    @classmethod
    def method1(cls):
        print(self.my_variable)

    @classmethod
    def method2(cls):
        print(self.my_variable)

obj = MyClass()
obj.method1()  # 输出：Hello
obj.method2()  # 输出：Hello

class MyClass:
    my_variable = "Hello"

    @classmethod
    def method1(cls):
        print(cls.my_variable)

    @classmethod
    def method2(cls):
        print(cls.my_variable)

MyClass.method1()  # 输出：Hello
MyClass.method2()  # 输出：Hello

class MyClass:
    @staticmethod
    def method1(variable):
        print(variable)

    @staticmethod
    def method2(variable):
        print(variable)

MyClass.method1("Hello")  # 输出：Hello
MyClass.method2("World")  # 输出：World