virtualenv pip mysqldb mac os X python

Question

我尝试使用这个http://jazstudios.blogspot.com/2010/07/installing-mysql-python-mysqldb-in.html技巧将mysqldb (mysqldb)安装在一个虚拟环境(命名为dogme)中。(这篇文章指出了两件重要的事情：

export ARCHFLAGS="-arch x86_64"
echo "mysql_config = /opt/local/bin/mysql_config5" >> ./dogme/build/MySQL-python/site.cfg

来帮助编译mysqldb)

但是，当我运行python之后，导入MySQLdb，我得到了以下内容：

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/.virtualenvs/dogme/lib/python2.5/site-packages/MySQLdb/__init__.py", line 19, in <module>
    import _mysql
ImportError: dlopen(/home/.virtualenvs/dogme/lib/python2.5/site-packages/_mysql.so, 2): Symbol not found: _mysql_affected_rows
  Referenced from: /home/.virtualenvs/dogme/lib/python2.5/site-packages/_mysql.so
  Expected in: flat namespace
 in /home/.virtualenvs/dogme/lib/python2.5/site-packages/_mysql.so

有人知道怎么回事吗？

Answer 1

我也有类似的问题，看看我的回溯：

>>> import MySQLdb
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Library/Python/2.6/site-packages/MySQLdb/__init__.py", line 19, in <module>
    import _mysql
ImportError: dlopen(/Library/Python/2.6/site-packages/_mysql.so, 2): Library not loaded: libmysqlclient.16.dylib
  Referenced from: /Library/Python/2.6/site-packages/_mysql.so
  Reason: image not found

我所做的就是把这些变量放到我的.bash_profile中

export DYLD_LIBRARY_PATH="/usr/local/mysql/lib/:$DYLD_LIBRARY_PATH"

当我使用Apache运行Python应用程序时，我使用SetEnv指令设置了相同的变量：

<Directory "/path/to/app">
    SetEnv DYLD_LIBRARY_PATH /usr/local/mysql/lib/:$DYLD_LIBRARY_PATH
    ...
</Directory>

现在一切都正常了。