使用GAE“没有名为memcache的模块”

Question

我使用命令appcfg.py更新APPNAME 更新了我的应用。

更新后，我检查了一下，发现我的应用因为以下错误而崩溃了：

Traceback (most recent call last):
  File "/base/data/home/runtimes/python27/python27_lib/versions/1/google/appengine/runtime/wsgi.py", line 266, in Handle
result = handler(dict(self._environ), self._StartResponse)
  File "/base/data/home/runtimes/python27/python27_lib/versions/third_party/django-1.4/django/core/handlers/wsgi.py", line 219, in __call__
self.load_middleware()
  File "/base/data/home/runtimes/python27/python27_lib/versions/third_party/django-1.4/django/core/handlers/base.py", line 47, in load_middleware
raise exceptions.ImproperlyConfigured('Error importing middleware %s: "%s"' % (mw_module, e))

ImproperlyConfigured: Error importing middleware django.contrib.sessions.middleware: "No module named memcache"

有人可以帮我解决这个问题吗？