修改 ModPython 下 PYTHON_EGG_CACHE 報錯

環境：Linux Apache Python(mod_python)

換了一臺新機器，沒有配置Mod_Python了，在一些應用裏import MySQLdb出現了下面錯誤：

ExtractionError: Can't extract file(s) to egg cache

The following error occurred while trying to extract file(s) to the Python egg
cache:

  [Errno 13] Permission denied: '/root/.python-eggs'

The Python egg cache directory is currently set to:

  /root/.python-eggs

Perhaps your account does not have write access to this directory?  You can
change the cache directory by setting the PYTHON_EGG_CACHE environment
variable to point to an accessible directory.

解決辦法有兩種：

1.設置PYTHON_EGG_CACHE環境變量

$ SetEnv PYTHON_EGG_CACHE /tmp/aaa/

目錄權限注意要是apache用戶，或者簡單點就777

2.把egg格式轉成目錄

$ cd /python-path/site-packages/

$ mv MySQL_python-1.2.3c1-py2.5-linux-x86_64.egg foo.zip

$ mkdir MySQL_python-1.2.3c1-py2.5-linux-x86_64.egg

$ cd MySQL_python-1.2.3c1-py2.5-linux-x86_64.egg

$ unzip ../foo.zip 

$ rm ../foo.zip