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。

    1. from itertools import chain
    2. iter_1 = [1, 2, 3]
    3. iter_2 = ("a", "b", "c")
    4. iter_3 = "中国人"
    5. for ele in chain(iter_1, iter_2, iter_3):
    6. print(ele) # 1 2 3 "a" "b" "c" '中' '国' '人'