CentOS6.x升级安装python2.7

一、背景说明：

    CentOS6.x系统默认自带python 2.6.x，但现在很多自动化运维工具使用最新的2.7.x版本，故要进行兼容性升级

二、安装

采用编译安装，保留原2.6版本

1、升级依赖：

    #yum install gcc gcc-c++ readline-devel zlib-devel openssl-devel sqlite-devel -y

2、源码下载与安装：

    #wget https://www.python.org/ftp/python/2.7.12/Python-2.7.12.tgz

    tar xvf Python-2.7.12.tgz

    cd Python-2.7.12

    #./configure --prefix=/usr/local/python27

    #make

    #make install

    #cd /usr/bin

    #mv python python26

    #ln -sf /usr/local/python27/bin/python /usr/bin/python

三、解决yum兼容问题

    #vim /usr/bin/yum   修改第一行

    #!/usr/bin/python  ---> #!/usr/bin/python2.6

四、安装pip   easy_install

    #wget https://bootstrap.pypa.io/get-pip.py

    #python get-pip.py

    #ln -sf /usr/local/python27/bin/pip /usr/bin/pip

    #ln -sf /usr/local/python27/bin/easy_install /usr/bin/easy_install

五、安装ipython,MySQLdb模块

    #pip install ipython

    #ln -sf /usr/local/python27/bin/ipython   /usr/bin/ipython

    安装MySQLdb模块

    #pip install MySQL-python

至此长级python 2.6.6 到2.7.10完成