如何忽略传递给数据类的额外参数？

class MyClass:
    def __init__(self, param1, param2="default"):
        self.param1 = param1
        self.param2 = param2

obj1 = MyClass("value1")  # 使用默认参数
obj2 = MyClass("value1", "value2")  # 传递额外参数

class MyClass:
    def __init__(self, param1, *args):
        self.param1 = param1
        self.extra_params = args

obj1 = MyClass("value1")  # 不传递额外参数
obj2 = MyClass("value1", "value2", "value3")  # 传递额外参数

class MyClass:
    def __init__(self, param1):
        self.param1 = param1

obj1 = MyClass("value1")  # 不传递额外参数