CentOS升级Python的方法

centOS内核版本为：3.10.101-1.el6.elrepo.x86_64

1，下载Python安装包

wget http://www.python.org/ftp/python/2.7.6/Python-2.7.6.tgz

2，解压

tar -xzf Python-2.7.6.tgz 

3，安装

cd Python-2.7.6
./configure
make && make install

默认安装路径/usr/local/bin

4，建立软连接，更改系统默认版本

mv /usr/bin/python /usr/bin/python.bak
ln -s /usr/local/bin/python2.7 /usr/bin/python

5，验证Python版本

python -V

6，修复yum工具

vi /usr/bin/yum

　　看到yum内容如下：

#!/usr/bin/python
import sys
try:
    import yum
except ImportError:
    print >> sys.stderr, """\
There was a problem importing one of the Python modules
required to run yum. The error leading to this problem was:

   %s

Please install a package which provides this module, or
verify that the module is installed correctly.

It's possible that the above module doesn't match the
current version of Python, which is:
%s

If you cannot solve this problem yourself, please go to
the yum faq at:
  http://yum.baseurl.org/wiki/Faq

""" % (sys.exc_value, sys.version)
    sys.exit(1)

sys.path.insert(0, '/usr/share/yum-cli')
try:
    import yummain
    yummain.user_main(sys.argv[1:], exit_code=True)
except KeyboardInterrupt, e:
    print >> sys.stderr, "\n\nExiting on user cancel."
    sys.exit(1)

　　修改第一行 #!/usr/bin/python 为 #!/usr/bin/python2.6（我的系统默认版本为2.6）