Linux_升级python 2.7.3（centos）

首先下载源tar包
可利用linux自带下载工具wget下载，如下所示：
wget http://www.python.org/ftp/python/2.7.3/Python-2.7.3.tgz 下载完成后到下载目录下，解压
tar -zxvf Python-2.7.3.tgz

进入解压缩后的文件夹
cd Python-2.7.3
在编译前先在/usr/local建一个文件夹python27（作为python的安装路径，以免覆盖老的版本）
mkdir /usr/local/python2.7.3
在解压缩后的目录下编译安装
./configure --prefix=/usr/local/python2.7.3
make
make install
此时没有覆盖老版本，再将原来/usr/bin/python链接改为别的名字
mv /usr/bin/python /usr/bin/python_old（这里仅仅是改名，将老版本的/usr/bin/python改名为/usr/bin/python_old，如果是python2.6，就改为usr/bin/python_2.6）
再建立新版本python的链接
ln -s /usr/local/python2.7.3/bin/python2.7   /usr/bin/python
这个时候输入
python
就会显示出python的新版本信息
#python安装完毕后，提示找不到ssl模块：[root@localhost ~]# python2.7.5 
Python 2.7.5 (default, Jun 3 2013, 11:08:43) 
[GCC 4.1.2 20080704 (Red Hat 4.1.2-54)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import ssl
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/python27/lib/python2.7/ssl.py", line 60, in <module>
import _ssl # if we can't import it, let the error propagate
ImportError: No module named _ssl
>>>

2. 查看openssl安装包，发现缺少openssl-devel包
[root@localhost ~]# rpm -aq|grep openssl
openssl-0.9.8e-20.el5
openssl-0.9.8e-20.el5

3. yum安装openssl-devel
[root@localhost ~]# yum install openssl-devel -y
#查看安装结果
[root@localhost ~]# rpm -aq|grep openssl
openssl-0.9.8e-26.el5_9.1
openssl-0.9.8e-26.el5_9.1
openssl-devel-0.9.8e-26.el5_9.1
openssl-devel-0.9.8e-26.el5_9.1

4. 重新编译python
#修改Setup文件
vim    /usr/software/Python-2.7.5/Modules/Setup
#修改结果如下：
# Socket module helper for socket(2)
_socket socketmodule.c timemodule.c

# Socket module helper for SSL support; you must comment out the other
# socket line above, and possibly edit the SSL variable:
#SSL=/usr/local/ssl
_ssl _ssl.c \
-DUSE_SSL -I$(SSL)/include -I$(SSL)/include/openssl \
-L$(SSL)/lib -lssl -lcrypto

5. 重新编译安装python
cd Python-2.7.3./configure --prefix=/usr/local/python2.7.3makemake install

6. 测试，已可正常使用。
[root@localhost ~]# python2.7.5
Python 2.7.5 (default, Jun 3 2013, 14:56:13) 
[GCC 4.1.2 20080704 (Red Hat 4.1.2-54)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import ssl
>>>

转载自：http://www.jb51.net/article/51800.htm http://www.cnblogs.com/yuechaotian/archive/2013/06/03/3115472.html