Upgrade Python And Pip On CentOS 6.x

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/jeremy_yangt/article/details/50379575

下载python2.7源码，编译安装

安装openssl与openssl-devel包

# yum install openssl 
# yum install openssl-devel

进入python源代码文件夹，修改Modules/Setup.dist文件

#vim Setup.dist
修改
# 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

为

# 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

安装python

# ./configure --prefix=/usr/local/python2.7
# make all
# make install

替换原有python2.6版本

# rm -rf /usr/bin/python
# ln -s /usr/local/python2.7/bin/python /usr/bin/

# vim /usr/bin/yum
To:
#!/usr/bin/python2.6
...

重新安装pip

安装setuptools：

# curl https://bitbucket.org/pypa/setuptools/raw/bootstrap/ez_setup.py | python

安装pip

easy_install pip

此时pip安装在新版python目录的bin目录: /usr/local/python2.7/bin/下
需要软链到/usr/bin/pip下方能正常使用

# ln -s /usr/local/python2.7/bin/pip2.7 /usr/bin/pip

测试

# pip install pymongo
Collecting pymongo
  Downloading http://pypi.douban.com/packages/source/p/pymongo/pymongo-3.2.tar.gz (473kB)
    100% |████████████████████████████████| 475kB 1.0MB/s 
Installing collected packages: pymongo
  Running setup.py install for pymongo
Successfully installed pymongo-3.2
# python
Python 2.7.11 (default, Dec 22 2015, 13:41:47) 
[GCC 4.4.7 20120313 (Red Hat 4.4.7-16)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import pymongo
>>> 

End!

相关问题：

1, 升级python2.6到2.7以后执行pip会报这个错误:

Traceback (most recent call last):
  File "/var/www/mydir/virtualenvs/dev/bin/pip", line 5, in <module>
    from pkg_resources import load_entry_point
ImportError: No module named pkg_resources

重新安装一下setuptools即可解决：

curl https://bitbucket.org/pypa/setuptools/raw/bootstrap/ez_setup.py | python

2, python自带url库默认不支持https导致在执行安装setuptools是出错：

urllib2.URLError: <urlopen error unknown url type: https> 

解决办法参考文章上面修改:Modules/Setup.dist部分

相关链接：
https://pypi.python.org/pypi/distribute/0.6.10