itertools.chain()接收一个可迭代对象作为输入,并返回一个可迭代对象,屏蔽掉在多个容器中迭代细节。 from itertools import chainiter_1 = [1, 2, 3]iter_2 = ("a", "b", "c")iter_3 = "中国人"for ele in chain(iter_1, iter_2, iter_3): print(ele) # 1 2 3 "a" "b" "c" '中' '国' '人'