Mac下安装MySQLdb过程及问题

首先，到 http://sourceforge.net/projects/mysql-python/ 下载，

然后解压：tar zxvf MySQL-python-1.2.4b4.tar

进入解压的文件目录，运行命令：python setup.py install 进行安装。

如果中间没出问题，那你也太lucky了，这不科学！

下面是会出现的问题：

1.如果碰到 "mysql_config not found" 的问题，编辑文件夹下的site.cfg文件，去掉#mysql_config = /usr/local/bin/mysql_config前的注释，修改后面的路径为mysql_config真实目录就可以了(一般为/usr/local/mysql/bin/mysql_config)，然后再执行python setup.py
install看是否有错。

2.如果碰到有显示setup_posix.py的问题，这还是目录问题，原因就是setup_posix.py 里的mysql_config.path 的默认路径是mysql_config，要将其目录改为mysql_config的真实目录 mysql_config.path = "/usr/local/mysql/bin/mysql_config" ，然后再执行python
setup.py install

3.如果出现以下问题：
………………Errno 13] Permission denied: '/Library/Python/2.7/site-packages/test-easy-install-3121.write-test'

The installation directory you specified (via --install-dir, --prefix, or

the distutils default setting) was:

    /Library/Python/2.7/site-packages/

Perhaps your account does not have write access to this directory?  If the

installation directory is a system-owned directory, you may need to sign in

as the administrator or "root" account.  If you do not have administrative

access to this machine, you may wish to choose a different installation

directory, preferably one that is listed in your PYTHONPATH environment

variable.………………
则将python setup.py install命令改为 sudo python setup.py install即可，然后输入密码安装。

4.安装完之后，终端进入python，执行import MySQLdb命令，如果没错，说明一切OK了，
如果遇到 “image not found”问题，则运行以下两行命令：

sudo ln -s /usr/local/mysql/lib/libmysqlclient.18.dylib /usr/lib/libmysqlclient.18.dylib
sudo ln -s /usr/local/mysql/lib /usr/local/mysql/lib/mysql

这个问题就解决了。