Centos6.4上python2.6.6升级到2.7.6

好久不写博文了，本文没什么含金量，只是做一个记录。便于日后翻阅。

0.操作系统信息

[vagrant@localhost ~]$ cat /etc/issue

CentOS release 6.4 (Final)

Kernel \r on an \m

1.当前python版本信息

[vagrant@localhost bin]$ pwd

/usr/bin

[vagrant@localhost bin]$ ll -a python

-rwxr-xr-x. 2 root root 4864 2月 22 2013 python

[vagrant@localhost bin]$ python

Python 2.6.6 (r266:84292, Feb 22 2013, 00:00:18)

[GCC 4.4.7 20120313 (Red Hat 4.4.7-3)] on linux2

Type "help", "copyright", "credits" or "license" for more information.

>>>

2.删掉当前python

[vagrant@localhost bin]$ sudo rm -rf python

3.下载且安装2.7.6安装包

[vagrant@localhost download]$ ll Python-2.7.6.tgz

-rw-r--r-- 1 vagrant vagrant 14725931 5月 14 2014
Python-2.7.6.tgz

[vagrant@localhost Python-2.7.6]$ ./configure && make && sudo make install

4.制作软连接把python2.7.6指向python

[vagrant@localhost bin]$ sudo ln -s /usr/local/bin/python2.7 python

[vagrant@localhost bin]$ pwd

/usr/bin

[vagrant@localhost bin]$ ll python

lrwxrwxrwx 1 root root 24 2月 14 14:29 python ->/usr/local/bin/python2.7

ok,现在的python环境切换成2.7.6了。

[vagrant@localhost ~]$ python

Python 2.7.6 (default, Feb 14 2015, 14:13:13)

[GCC 4.4.7 20120313 (Red Hat 4.4.7-3)] on linux2

Type "help", "copyright", "credits" or "license" for more information.

>>>

python是升级成功了，可是yum不能使用了。。。

[vagrant@localhost webservice]$ yum

There was a problem importing one of the Python modules

required to run yum. The error leading to this problem was:

No module named yum

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:

2.7.6 (default, Feb 14 2015, 14:13:13)

[GCC 4.4.7 20120313 (Red Hat 4.4.7-3)]

If you cannot solve this problem yourself, please go to

the yum faq at:
http://yum.baseurl.org/wiki/Faq
找不到yum模块了

解决方法：

[vagrant@localhost webservice]$ vi /usr/bin/yum

编辑第一行

#!/usr/bin/python

import sys

try:

改成如下（原python版本是2.6）

#!/usr/bin/python2.6

import sys

try:

这些yum正常了

[vagrant@localhost webservice]$ yum --version

3.2.29

Installed: rpm-4.8.0-32.el6.x86_64 at 2013-11-03 07:59

Built : CentOS BuildSystem <http://bugs.centos.org> at 2013-02-22 02:13

Committed: Florian Festi <ffesti@redhat.com> at 2012-11-15

Installed: yum-3.2.29-40.el6.centos.noarch at 2013-11-03 07:59

Built : CentOS BuildSystem <http://bugs.centos.org> at 2013-02-22 11:26

Committed: Johnny Hughes <johnny@centos.org> at 2013-02-21

Installed: yum-plugin-fastestmirror-1.1.30-14.el6.noarch at 2013-11-03 07:59

Built : CentOS BuildSystem <http://bugs.centos.org> at 2012-06-22 12:23

Committed: Zdenek Pavlas <zpavlas@redhat.com> at 2012-04-26

参考：http://see.sl088.com/wiki/Centos5_升级Python