Centos 6.5 python 2.6.6 升级到 2.7

1、查看python的版本

[[email protected] ~]# python -V
Python 2.6.6

2、安装python 2.7.3

[[email protected] ~]# yum install -y gcc-c++

[[email protected] ~]# wget http://python.org/ftp/python/2.7.3/Python-2.7.3.tar.bz2

[[email protected] ~]# tar -jxvf Python-2.7.3.tar.bz2  

[[email protected] ~]# cd Python-2.7.3

[[email protected] Python-2.7.3]# ./configure

[[email protected] Python-2.7.3]# make all

[[email protected] Python-2.7.3]# make install[[email protected] Python-2.7.3]# make clean

[[email protected] Python-2.7.3]# make distclean

3.查看版本信息　　

[[email protected] ~]# /usr/local/bin/python2.7 -V
Python 2.7.3

4、建立软连接，使系统默认的 python指向 python2.7

[[email protected] ~]# mv /usr/bin/python /usr/bin/python2.6.6 

[[email protected] ~]# ln -s /usr/local/bin/python2.7 /usr/bin/python

5、重新检验Python 版本　

[[email protected] ~]# python -V
Python 2.7.3

6、解决系统 Python 软链接指向 Python2.7 版本后，因为yum是不兼容 Python 2.7的，所以yum不能正常工作，我们需要指定 yum 的Python版本　

[[email protected] ~]# vi /usr/bin/yum 

将文件头部的 #!/usr/bin/python 

改成 #!/usr/bin/python2.6.6