Python，不定参数/多参数，柯里化

需要用到面向对象里的__init__，__call__，__str__三种魔法函数，可以跟JavaScript一样完美的柯里化

class add:

    def __init__(self, *args):
        self.value = sum(args)

    def __call__(self, *args):
        self.value += sum(args)
        return self

    def __str__(self):
        return str(self.value)

if __name__ == '__main__':
    print(add())
    # 0
    print(add(1)(2))
    # 3
    print(add(1, 2)(3)(4))
    # 10
    print(add()(1, 2)(3, 4)()(5)(6, 7, 8)(9, 10)()) 
    # 55