App Engine Python：AttributeError：'模塊'對象沒有屬性'股票'

我剛剛在生產中出現此錯誤。在本地主機上它運行良好。App Engine Python：AttributeError：'模塊'對象沒有屬性'股票'

Traceback (most recent call last): 
    File "/base/python_runtime/python_lib/versions/1/google/appengine/ext/webapp/_webapp25.py", line 701, in __call__ 
    handler.get(*groups) 
    File "/base/data/home/apps/s~ordenaacoes/2.357768699674437719/controllers/mainh.py", line 74, in get 
    'stocks': goodStocks(), 
    File "/base/data/home/apps/s~ordenaacoes/2.357768699674437719/controllers/mainh.py", line 108, in goodStocks 
    goodStocks = memcache.get("goodStocks") 
    File "/base/python_runtime/python_lib/versions/1/google/appengine/api/memcache/__init__.py", line 574, in get 
    results = rpc.get_result() 
    File "/base/python_runtime/python_lib/versions/1/google/appengine/api/apiproxy_stub_map.py", line 592, in get_result 
    return self.__get_result_hook(self) 
    File "/base/python_runtime/python_lib/versions/1/google/appengine/api/memcache/__init__.py", line 639, in __get_hook 
    self._do_unpickle) 
    File "/base/python_runtime/python_lib/versions/1/google/appengine/api/memcache/__init__.py", line 271, in _decode_value 
    return do_unpickle(value) 
    File "/base/python_runtime/python_lib/versions/1/google/appengine/api/memcache/__init__.py", line 412, in _do_unpickle 
    return unpickler.load() 
    File "/base/python_runtime/python_dist/lib/python2.5/pickle.py", line 852, in load 
    dispatch[key](self) 
    File "/base/python_runtime/python_dist/lib/python2.5/pickle.py", line 1084, in load_global 
    klass = self.find_class(module, name) 
    File "/base/python_runtime/python_dist/lib/python2.5/pickle.py", line 1119, in find_class 
    klass = getattr(mod, name) 
AttributeError: 'module' object has no attribute 'Stock'

股票是我的模型之一。我也在本地主機上測試了python 2.5。

給出錯誤的行是對memcache（get函數）的訪問。
我已經改變了項目，也許我在memcache中放入的數據類型是不同的。我有辦法清除memcache上的數據嗎？

有什麼想法？

來源

2012-03-27 Juliano Krieger

請包含產生此錯誤的實際代碼的相關片段。謝謝。 – bernie 2012-03-27 20:05:59