查看版本

[root@localhost Python-2.7.8]# python
Python 2.6.6 (r266:84292, Aug 18 2016, 14:53:48) 
[GCC 4.4.7 20120313 (Red Hat 4.4.7-17)] on linux2
Type "help", "copyright", "credits" or "license" for more information.

• 操作：

• wget http://python.org/ftp/python/2.7.8/Python-2.7.8.tgz

  tar -zxvf Python-2.7.8.tar.bz2

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

  make && make install

mv /usr/bin/python /usr/bin/python_old

ln -s /usr/local/python27/bin/python /usr/bin/

检查

[root@localhost Python-2.7.8]# python
Python 2.7.8 (default, Jan  3 2018, 20:47:59) 
[GCC 4.4.7 20120313 (Red Hat 4.4.7-18)] on linux2
Type "help", "copyright", "credits" or "license" for more information.