Linux RedHat下安装Python2.7、pip、ipython环境、eclipse和PyDev环境 准备工作，源Python2.6备份： 根据which python具体目录而定，进行备份 mv /usr/local/bin/python cd /usr/local/bin/python2.6 或mv /usr/bin/python /usr/bin/python2.6 修改使用python2.6的程序配置，比如yum vim /usr/bin/yum #!/usr/bin/pyth