# -*- coding: utf-8 -*-
"""
Created on Tue Mar 26 14:27:35 2019

@author: Administrator

format是一个功能强大的格式化输出工具。
在使用的时候，可以用 {}来表示形参，{}可以加入序列号和格式。
"""

a = [1,2,3,4]
b = ["first","second","third","fourth"]
c = a + b
print("Output #3: {0}, {1}, {2}".format(a,b,c))

      