列表：
1 >>> l = [1, 2, 3, 4] 2 >>> l_iter = iter(l) 3 >>> l_iter 4 <list_iterator object at 0x10199e860> 5 >>> l = list(l_iter) 6 >>> l 7 [1, 2, 3, 4]
字符串：
1 >>> s = 'abcdef' 2 >>> l = list(s) 3 >>> l 4 ['a', 'b', 'c', 'd', 'e', 'f'] 5 >>> i = iter(l) 6 >>> i 7 <list_iterator object at 0x10199e8d0> 8 >>> s = ''.join(l) 9 >>> s 10 'abcdef' 11 >>> s = ''.join(i) 12 >>> s 13 'abcdef'
字典：
1 >>> d = dict(one=1, two=2) 2 >>> d 3 {'one': 1, 'two': 2} 4 >>> i = iter(d) 5 >>> i 6 <dict_keyiterator object at 0x1019a6458> # 键值得迭代器 7 >>> for k in i: 8 ... print(k) 9 ... 10 one 11 two
元组：
1 >>> t = (1, 2, 3, 4) 2 >>> t_iter = iter(t) 3 >>> t_iter 4 <tuple_iterator object at 0x10199eb00> 5 >>> t = tuple(t_iter) 6 >>> t 7 (1, 2, 3, 4)
集合：
1 >>> s = {1, 2, 3, 4} 2 >>> s_iter = iter(s) 3 >>> s_iter 4 <set_iterator object at 0x1019a5d38> 5 >>> s = set(s_iter) 6 >>> s 7 {1, 2, 3, 4}