import os, sys, site

def application(environ, start_response):

    os.environ['DJANGO_SETTINGS_MODULE'] = environ['DJANGO_SETTINGS_MODULE']

    prev_sys_path = list(sys.path)

    sys.path.append(environ['PROJECT_PATH'])

    for path in environ.get('PYTHON_PATH',"").split(os.pathsep):

        if path:

            site.addsitedir(path)

    new_sys_path = [] 

    for item in list(sys.path): 

        if item not in prev_sys_path: 

            new_sys_path.append(item) 

            sys.path.remove(item)

    sys.path[:0] = new_sys_path 

    import django.core.handlers.wsgi

    _application = django.core.handlers.wsgi.WSGIHandler()

    return _application(environ, start_response)