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: >>>
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