mac os 上安装mysqldb血泪史
昨天下午在mac上安装mysql-python一直未遂今天查了很多资料终于成功了 最后还是在stackoverflow点击打开链接（好网站啊，一般有什么技术问题在这都能找到）上找到了答案,废话少数:首先，下载MySQLdb：http://sourceforge.net/projects/mysql-python/
下载MySQL-python-1.2.3.tar.gz
解压，运行setup.py：
python setup.py install
报错：
sh: mysql_config: command not found
Traceback (most recent call last):
File "setup.py", line 15, in <module>
metadata, options = get_config()
File "/Users/***/Downloads/MySQL-python-1.2.3/setup_posix.py", line 43, in get_config
libs = mysql_config("libs_r")
File "/Users/***/Downloads/MySQL-python-1.2.3/setup_posix.py", line 24, in mysql_config
raise EnvironmentError("%s not found" % (mysql_config.path,))
EnvironmentError: mysql_config not found
参考：http://www.southsearepublic.org/article/2416/read/environmenterror_mysql_config_not_found/installing_mysqldb_for_python_on_mac_osx/
发现要修改site.cfg
mysql_config = /usr/local/mysql/bin/mysql_config
让mysql_config指向mysql在mac os中的安装位置。
之后再用高权限运行
sudo python setup.py install
如果运行的时候，还有问题：
>>> import MySQLdb
/Library/Python/2.7/site-packages/MySQL_python-1.2.3-py2.7-macosx-10.7-intel.egg/_mysql.py:3: UserWarning: Module _mysql was already imported from /Library/Python/2.7/site-packages/MySQL_python-1.2.3-py2.7-macosx-10.7-intel.egg/_mysql.pyc, but /Users/***/Downloads/MySQL-python-1.2.3is being added to sys.path
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "MySQLdb/__init__.py", line 19, in <module>
import _mysql
File "build/bdist.macosx-10.7-intel/egg/_mysql.py", line 7, in <module>
File "build/bdist.macosx-10.7-intel/egg/_mysql.py", line 6, in __bootstrap__
ImportError: dlopen(/Users/***/.python-eggs/MySQL_python-1.2.3-py2.7-macosx-10.7-intel.egg-tmp/_mysql.so, 2): Library not loaded: libmysqlclient.18.dylib
Referenced from: /Users/***/.python-eggs/MySQL_python-1.2.3-py2.7-macosx-10.7-intel.egg-tmp/_mysql.so
Reason: image not found
那么就需要解决动态引入的问题了（重新做一遍，并且设置环境变量）：
$ sudo python setup.py clean
$ sudo python setup.py build
$ sudo python setup.py install
$ export DYLD_LIBRARY_PATH=/usr/local/mysql/lib:$DYLD_LIBRARY_PATH
$python
>>> import MySQLdb
/Library/Python/2.7/site-packages/MySQL_python-1.2.3-py2.7-macosx-10.7-intel.egg/_mysql.py:3: UserWarning: Module _mysql was already imported from /Library/Python/2.7/site-packages/MySQL_python-1.2.3-py2.7-macosx-10.7-intel.egg/_mysql.pyc, but /Users/***/Downloads/MySQL-python-1.2.3is being added to sys.path
>>> conn=MySQLdb.connect(host="localhost",user="root",passwd="root",db="mysql")
>>> cursor =conn.cursor()
>>> sql ="select * from user"
>>> cursor.execute(sql)
7L
>>> row=cursor.fetchone()
>>> print row
('localhost', 'root', '*81F5E21E35407D884A6CD4A731AEBFB6AF209E1B', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', '', '', '', '', 0L, 0L, 0L, 0L, '', '')
能够读取mysql.user表的信息了，说明已经mysqldb已经安装成功。
参考：http://stackoverflow.com/questions/1465846/install-mysqldb-on-snow-leopard/6537345#6537345
如果还是在eclipse中有问题，那就采用这里的办法 http://yanghao.org/blog/archives/76
解决办法： eclipse->偏好设置->Pydev->Interpreter-Python->Environment里面增加下面内容，看图：http://yanghao.org/blog/wp-content/uploads/2011/03/%E5%B1%8F%E5%B9%95%E5%BF%AB%E7%85%A7-2011-03-05-%E4%B8%8A%E5%8D%8812.49.19.png
Eclipse中配置MySQLdb模块
Window ——> Preferences ——> PyDev ——> Interpreter-Python ——> Forced Builtins ——> New... —— > 输入MySQLdb ——> OK
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