更新Python到2.7

眼看着python3 都出来了，vps上用的还是2.4的版本额，确实汗了一把。决定升级下python。

python2.7是2.X的最后一个版本，同时她也加入了一部分3.X的新特性。so 让我们升级吧！

查看系统当前python版本

   2:

 [root@wangyuelou ~]# python

   1:

  

   3:

 Python 2.4.3 (#1, May  5 2011, 16:39:10) 

   4:

 [GCC 4.1.2 20080704 (Red Hat 4.1.2-50)] on linux2

   5:

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

   6:

 >;>> 

   7:

 [root@wangyuelou ~]# 

下载新版本的python

1: [root@wangyuelou ~]# wget http://python.org/ftp/python/2.7.2/Python-2.7.2.tgz

解压缩 以及编译

   1:

 [root@wangyuelou ~]# tar xvf Python-2.7.2.tar.bz2 

   2:

 [root@wangyuelou Python-2.7.2]# ./configure --prefix=/usr/local/python27

   3:

 [root@wangyuelou Python-2.7.2]# make

   4:

 [root@wangyuelou Python-2.7.2]# make install

   5:

 [root@wangyuelou Python-2.7.2]# ls /usr/local/python27/ -al

   6:

 total 28

   7:

 drwxr-xr-x  6 root root 4096 Jul 14 00:21 .

   8:

 drwxr-xr-x 20 root root 4096 Jul 14 00:17 ..

   9:

 drwxr-xr-x  2 root root 4096 Jul 14 00:21 bin

  10:

 drwxr-xr-x  3 root root 4096 Jul 14 00:21 include

  11:

 drwxr-xr-x  4 root root 4096 Jul 14 00:21 lib

  12:

 drwxr-xr-x  3 root root 4096 Jul 14 00:21 share

覆盖原来的python链接

   1:

 [root@wangyuelou Python-2.7.2]# mv /usr/bin/python /usr/bin/python_old

   2:

 [root@wangyuelou Python-2.7.2]# ln -s /usr/local/python27/bin/python /usr/bin/

   3:

 [root@wangyuelou Python-2.7.2]# python

   4:

 Python 2.7.2 (default, Jul 14 2011, 00:20:14) 

   5:

 [GCC 4.1.2 20080704 (Red Hat 4.1.2-50)] on linux2

   6:

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

   7:

 >>>