pip修改源为国内源，加速下载

修改～/.pip/pip.conf文件，如果没有就创建一个，写入如下内容（以清华源为例）：[global]index-url = https://pypi.tuna.tsinghua.edu.cn/simple[install]trusted-host = pypi.tuna.tsinghua.edu.cn

CentOS6.9升级python2.6至2.7

安装依赖：yum groupinstall "Development tools" yum install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel 安装python2.7：wget https://www.python.org/ftp/python/2.7.13/Python-2.7....