mac上用于python的Mysqldb出现问题

嗨，我正试图在mac上安装mysqldb for python，下面是跟踪。有人能帮忙吗

>>> import MySQLdb
/Library/Python/2.6/site-packages/MySQL_python-1.2.3-py2.6-macosx-10.6-universal.egg/_mysql.py:3: UserWarning: Module _mysql was already imported from /Library/Python/2.6/site-packages/MySQL_python-1.2.3-py2.6-macosx-10.6-universal.egg/_mysql.pyc, but /Users/christopherfarm/Downloads/MySQL-python-1.2.3 is 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-10.6-universal/egg/_mysql.py", line 7, in <module>
  File "build/bdist.macosx-10.6-universal/egg/_mysql.py", line 6, in __bootstrap__
ImportError: dlopen(/Users/christopherfarm/.python-eggs/MySQL_python-1.2.3-py2.6-macosx-10.6-universal.egg-tmp/_mysql.so, 2): Library not loaded: libmysqlclient.18.dylib
  Referenced from: /Users/christopherfarm/.python-eggs/MySQL_python-1.2.3-py2.6-macosx-10.6-universal.egg-tmp/_mysql.so
  Reason: image not found

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在这里找到了答案。但不确定符号链接的作用以及是否有更好的替代方案

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