如何将参数从一个类传递到它的两个函数中？

class MyClass:
    def __init__(self, param):
        self.param = param

    def function1(self):
        # 使用self.param

    def function2(self):
        # 使用self.param

class MyClass:
    def function1(self, param):
        # 使用param

    def function2(self, param):
        # 使用param

class MyClass:
    def __init__(self):
        self.param = None

    def set_param(self, param):
        self.param = param

    def get_param(self):
        return self.param

    def function1(self):
        # 使用self.param

    def function2(self):
        # 使用self.param