Python迭代器模式

迭代器模式，不一次性直接返回结果，调用一次方法，返回一个。

class Iterator(object):
    def __init__(self, iterator_list):
        super().__init__()
        self.list = iterator_list
        self.current_index = 0
        self.max_index = 0

    def __iter__(self):
        self.current_index = 0
        self.max_index = len(self.list) - 1
        return self

    def __next__(self):
        if self.current_index <= self.max_index:
            one = self.list[self.current_index]
            self.current_index += 1
            return one
        else:
            raise StopIteration


def main():
    iterator = Iterator([5, 9, 7, 'x', 'e'])
    for one in iterator:
        print(one)


if __name__ == '__main__':
    main()