解决Mac上使用MySQLdb报错的问题

报错信息:

Traceback (most recent call last):
  File “/Volumes/此处省略路径信息.../test.py", line 2, in <module> import MySQLdb as mdb File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/MySQLdb/__init__.py", line 19, in <module> import _mysql ImportError: dlopen(/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/_mysql.so, 2): Library not loaded: libmysqlclient.18.dylib Referenced from: /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/_mysql.so Reason: image not found

报错原因:

找不到libmysqlclient.18.dylib这个文件,但这个文件在/usr/local/mysql/lib/下是有的, 只是位置不对，于是我们这样解决.

执行命令:

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

结果提示:

ln: /usr/lib/libmysqlclient.18.dylib: Operation not permitted

原因:

The computer security settings prevent the shared library _mysql.so from using a relative reference to the library libmysqlclient.18.dylib. In the future, the shared library _mysql.so may be updated. Until then, you can force it to use an absolute reference via the install_name_toolutility. Assuming that libmysqlclient.18.dylib is in /usr/local/mysql/lib/, then run the command

解决办法:

sudo install_name_tool -change libmysqlclient.18.dylib \
/usr/local/mysql/lib/libmysqlclient.18.dylib \
/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/_mysql.so

问题解决！

参考: http://errorlog.lofter.com/post/1cb97859_7d3be93

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