centos5.x升级至python2.7、mysql-python
centos5.3的python版本真让人泪奔，什么时代了还2.4的。自己动手丰衣足食。
1.从官网下载2.7版本
2.安装
# cd Python-2.7.1
# ./configure （如不指定 --prefix，默认安装在/usr/local/lib/python2.7）
# make && make install
3.升级默认版本
# ln -s /usr/local/bin/python2.7 /usr/bin/python
4.安装mysql-python
(安装方法不了解可以参看包内的README)
Traceback (most recent call last):
File "setup.py", line 5, in <module>
from setuptools import setup, Extension
ImportError: No module named setuptools
什么情况？貌似setuptools没有
5.去官网下载setuptools
Traceback (most recent call last):
File "<string>", line 1, in <module>
zipimport.ZipImportError: can't decompress data; zlib not available
又是什么情况？缺少zlib?(关于安装python所需的软件环境可参看README)
这一步我花了很长时间解决它，过程实在是很让人不爽。从上面这个错误提示似乎是zlib没有，最先想到的是使用yum安装zlib*。
zlib-1.2.3-3
zlib-devel-1.2.3-3
重新编译python以后，依旧提示这个错误"zipimport.ZipImportError: can't decompress data; zlib not available"，到最后都有点抓狂了。快要发飙的时候浏览了zlib的官站，它的最新版本是zlib-1.2.5。我决定用 tar包安装最新版本试试。
安装过程非常简单，仍是老三步：
# ./configure
# make && make install
在解决该问题的过程中，我发现了python安装方法中最简易的一种“easy_install” ，将使用它来安装mysql-python
# python ez_setup.py
Downloading http://pypi.python.org/packages/2.7/s/setuptools/setuptools-0.6c11-py2.7.egg
Processing setuptools-0.6c11-py2.7.egg
Copying setuptools-0.6c11-py2.7.egg to /usr/local/lib/python2.7/site-packages
Adding setuptools 0.6c11 to easy-install.pth file
Installing easy_install script to /usr/local/bin
Installing easy_install-2.7 script to /usr/local/bin
Installed /usr/local/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg
Processing dependencies for setuptools==0.6c11
Finished processing dependencies for setuptools==0.6c11
在上一步步骤中，它自行安装了setuptools-0.6c11-py2.7.egg，这样就可以使用 easy_install 了。
4.安装MySQL-python
Searching for MySQL-python
Reading http://pypi.python.org/simple/MySQL-python/
Reading http://sourceforge.net/projects/mysql-python/
Reading http://sourceforge.net/projects/mysql-python
Best match: MySQL-python 1.2.3
Downloading http://download.sourceforge.net/sourceforge/mysql-python/MySQL-python-1.2.3.tar.gz
Processing MySQL-python-1.2.3.tar.gz
Running MySQL-python-1.2.3/setup.py -q bdist_egg --dist-dir /tmp/easy_install-0IG0OI/MySQL-python-1.2.3/egg-dist-tmp-pBvQ9I
sh: mysql_config: command not found
Traceback (most recent call last):
File "/usr/local/bin/easy_install", line 8, in <module>
load_entry_point('setuptools==0.6c11', 'console_scripts', 'easy_install')()
File "/usr/local/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg/setuptools/command/easy_install.py", line 1712, in main
File "/usr/local/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg/setuptools/command/easy_install.py", line 1700, in with_ei_usage
File "/usr/local/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg/setuptools/command/easy_install.py", line 1716, in <lambda>
File "/usr/local/lib/python2.7/distutils/core.py", line 152, in setup
dist.run_commands()
File "/usr/local/lib/python2.7/distutils/dist.py", line 953, in run_commands
self.run_command(cmd)
File "/usr/local/lib/python2.7/distutils/dist.py", line 972, in run_command
cmd_obj.run()
File "/usr/local/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg/setuptools/command/easy_install.py", line 211, in run
File "/usr/local/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg/setuptools/command/easy_install.py", line 446, in easy_install
File "/usr/local/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg/setuptools/command/easy_install.py", line 476, in install_item
File "/usr/local/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg/setuptools/command/easy_install.py", line 655, in install_eggs
File "/usr/local/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg/setuptools/command/easy_install.py", line 930, in build_and_install
File "/usr/local/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg/setuptools/command/easy_install.py", line 919, in run_setup
File "/usr/local/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg/setuptools/sandbox.py", line 62, in run_setup
File "/usr/local/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg/setuptools/sandbox.py", line 105, in run
File "/usr/local/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg/setuptools/sandbox.py", line 64, in <lambda>
File "setup.py", line 15, in <module>
File "/tmp/easy_install-0IG0OI/MySQL-python-1.2.3/setup_posix.py", line 43, in get_config
File "/tmp/easy_install-0IG0OI/MySQL-python-1.2.3/setup_posix.py", line 24, in mysql_config
EnvironmentError: mysql_config not found
以上错误提示没有安装mysql环境，需要安装mysql,此处省略N个字，安装好mysql以后,再度安装MySQL-python
Searching for MySQL-python
Reading http://pypi.python.org/simple/MySQL-python/
Reading http://sourceforge.net/projects/mysql-python/
Reading http://sourceforge.net/projects/mysql-python
Best match: MySQL-python 1.2.3
Downloading http://download.sourceforge.net/sourceforge/mysql-python/MySQL-python-1.2.3.tar.gz
Processing MySQL-python-1.2.3.tar.gz
Running MySQL-python-1.2.3/setup.py -q bdist_egg --dist-dir /tmp/easy_install-w7wAW2/MySQL-python-1.2.3/egg-dist-tmp-CCgmn2
warning: no files found matching 'MANIFEST'
warning: no files found matching 'ChangeLog'
warning: no files found matching 'GPL'
......
zip_safe flag not set; analyzing archive contents...
Adding MySQL-python 1.2.3 to easy-install.pth file
Installed /usr/local/lib/python2.7/site-packages/MySQL_python-1.2.3-py2.7-linux-x86_64.egg
Processing dependencies for MySQL-python
Finished processing dependencies for MySQL-python
5.此时应该算是将mysql-python安装上了，检验一下：
Python 2.7.1 (r271:86832, Apr 27 2011, 15:54:05)
[GCC 4.1.2 20080704 (Red Hat 4.1.2-50)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import MySQLdb
Traceback (most recent call last): File "build/bdist.linux-x86_64/egg/_mysql.py", line 6, in __bootstrap__
File "<stdin>", line 1, in <module> File "build/bdist.linux-x86_64/egg/MySQLdb/__init__.py", line 19, in <module> File "build/bdist.linux-x86_64/egg/_mysql.py", line 7, in <module>ImportError: libmysqlclient.so.16: cannot open shared object file: No such file or directory
果然是让人神伤啊，99步都走过了，不差这临门一脚。编辑ld.so.conf文件，添加libmysqlclient.so.16所在目录：
/usr/local/innosql-5.5.8-linux-x86_64/lib/
# ldconfig -v
再次检验，KO
Python 2.7.1 (r271:86832, Apr 27 2011, 15:54:05)
[GCC 4.1.2 20080704 (Red Hat 4.1.2-50)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import MySQLdb
>>>
上面的安装过程虽然没什么技术含量，但非常烦人。这里真得希望redhat系的大叔们能稍微把自带的python版本升高一点吧！
参考：
http://www.question-defense.com/2009/03/16/install-easy_install-via-yum-on-linux-centos-server
http://villaroad.com/2010/10/rolling-python-2-6-2-on-centos-5-3/
http://toey.tc20.net/2010/08/04/install-python-2-7-gevent-on-centos-5-x86_64/
http://www.sou5.cn/archives/tag/easy_install
http://my.oschina.net/captaintheron/blog/3668
http://blog.csdn.net/wxkingstar/archive/2009/09/08/4530651.aspx
