在Python中对int进行子类化

class CustomInt(int):
    def __new__(cls, value):
        return super().__new__(cls, value)

    def __str__(self):
        return f"CustomInt({super().__str__()})"

    def __repr__(self):
        return f"CustomInt({super().__repr__()})"

    def custom_method(self):
        return f"This is a custom method for CustomInt: {self}"

a = CustomInt(42)
print(a)  # 输出：CustomInt(42)
print(a.custom_method())  # 输出：This is a custom method for CustomInt: CustomInt(42)