u014297752的博客

编译环境准备准备一下编译环境，防止出现安装错误yum groupinstall 'Development Tools' yum install zlib-devel bzip2-devel openssl-devel ncurese-devel下载python3.5代码包这里选择下载最近版本的Python3.5.1 (2016-05) wget https://www.python.org/

一.格式化字符串1.数字转义成字符串num=18print 'My age is' + num程序就会报错。因为字符和数字不能直接用+相加。#办法一：通过str（）num = 18print 'My age is' + str(num)#办法二：num = 18print 'My age is %d'%num #%d只用于整数print ‘Price