App Engine Python:AttributeError:“module”对象没有属性“Stock”

Question

我只是在生产中遇到这个错误。在本地主机上运行良好。在

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'

股票是我的一类模型。我也在本地主机上用python2.5进行了测试。在

给出错误的行是访问memcache（get函数）。
我改变了项目，也许我放在memcache中的数据类型不同。我有办法清理memcache上的数据吗？在

有什么想法吗？在

Answer 1

从版本1.6.4开始，管理控制台中有一个Memcache查看器。它包括一个“刷新缓存”按钮，它应该能完全满足您的需要。在

Answer 2

很可能您在memcache中有一个与新代码不匹配的pickle版本。这里有一个关于刷新memcache的老问题，答案应该适用于您的案例：

How can I have Google App Engine clear memcache every time a site is deployed?