关于PYTHON_EGG_CACHE无权限的问题

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.

Traceback (most recent call last):
  File "/data/wap/www/spider/picture.py", line 8, in ?
    import MySQLdb, datetime, time
  File "build/bdist.linux-x86_64/egg/MySQLdb/__init__.py", line 19, in ?
  File "build/bdist.linux-x86_64/egg/_mysql.py", line 7, in ?
  File "build/bdist.linux-x86_64/egg/_mysql.py", line 4, in __bootstrap__
  File "/usr/lib/python2.4/site-packages/setuptools-0.6c11-py2.4.egg/pkg_resources.py", line 881, in resource_filename
    return get_provider(package_or_requirement).get_resource_filename(
  File "/usr/lib/python2.4/site-packages/setuptools-0.6c11-py2.4.egg/pkg_resources.py", line 1351, in get_resource_filename
    self._extract_resource(manager, self._eager_to_zip(name))
  File "/usr/lib/python2.4/site-packages/setuptools-0.6c11-py2.4.egg/pkg_resources.py", line 1372, in _extract_resource
    real_path = manager.get_cache_path(
  File "/usr/lib/python2.4/site-packages/setuptools-0.6c11-py2.4.egg/pkg_resources.py", line 962, in get_cache_path
    self.extraction_error()
  File "/usr/lib/python2.4/site-packages/setuptools-0.6c11-py2.4.egg/pkg_resources.py", line 928, in extraction_error
    raise err
pkg_resources.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.

　　上面错误是我在php执行python脚本的时候出现的问题：

解决办法是在开始的文件前面加上了这段代码

import os,sys

os.environ['PYTHON_EGG_CACHE'] = '/tmp/.python-eggs'
abspath = os.path.dirname(__file__)
sys.path.append(abspath)
os.chdir(abspath)

　　

参考链接：http://blog.blankyao.com/story/solve-python_egg_cache.html