MySQLdb ImportError: libmysqlclient.so.18解决方法

安装mysqldb后，import mysqldb出错如下：

[root@lizhong mysql-python-1.2.3]# /usr/local/bin/python2.7
python 2.7.6 (default, apr 10 2014, 15:45:39)
[gcc 4.4.7 20120313 (red hat 4.4.7-4)] on linux2
type "help", "copyright", "credits" or "license" for more information.
>>> import mysqldb
/usr/local/lib/python2.7/site-packages/mysql_python-1.2.3-py2.7-linux-x86_64.egg/_mysql.py:3: userwarning: module _mysql was already imported from /usr/local/lib/python2.7/site-packages/mysql_python-1.2.3-py2.7-linux-x86_64.egg/_mysql.pyc, but /soft/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.linux-x86_64/egg/_mysql.py", line 7, in <module>
  file "build/bdist.linux-x86_64/egg/_mysql.py", line 6, in __bootstrap__
importerror: libmysqlclient.so.18: cannot open shared object file: no such file or directory

根据最后提示，应该是找不着一个交libmysqlclient.so.18的文件，于是到mysql安装目录里找到这个文件并且做一个软连接到/usr/lib

ln -s /usr/local/mysql/lib/libmysqlclient.so.18 /usr/lib/libmysqlclient.so.18

如果是64系统则：

ln -s /usr/local/mysql/lib/libmysqlclient.so.18 /usr/lib64/libmysqlclient.so.18

再次import mysqldb就正常了：

[root@lizhong mysql-python-1.2.3]# /usr/local/bin/python2.7
python 2.7.6 (default, apr 10 2014, 15:45:39)
[gcc 4.4.7 20120313 (red hat 4.4.7-4)] on linux2
type "help", "copyright", "credits" or "license" for more information.
>>> import mysqldb
>>>