def _lookup_req_object(name):  
    top = _request_ctx_stack.top  
    if top is None:  
        raise RuntimeError('working outside of request context')  
    return getattr(top, name)  

_request_ctx_stack = LocalStack()  
request = LocalProxy(partial(_lookup_req_object, 'request'))  
session = LocalProxy(partial(_lookup_req_object, 'session'))

@implements_bool
class LocalProxy(object):
 """"""
　　__slots__ = ("__local", "__dict__", "__name__", "__wrapped__")

　　def __init__(self, local, name=None):
   　　object.__setattr__(self, "_LocalProxy__local", local)
      object.__setattr__(self, "__name__", name)
      if callable(local) and not hasattr(local, "__release_local__"):
      　　# "local" is a callable that is not an instance of Local or
         # LocalManager: mark it as a wrapped function.
         object.__setattr__(self, "__wrapped__", local)

   def _get_current_object(self):
      """Return the current object.  This is useful if you want the real
      object behind the proxy at a time for performance reasons or because
      you want to pass the object into a different context.
      """
      if not hasattr(self.__local, "__release_local__"):
          return self.__local()
      try:
          return getattr(self.__local, self.__name__)
      except AttributeError:
          raise RuntimeError("no object bound to %s" % self.__name__)

  def __getattr__(self, name):
      if name == "__members__":
          return dir(self._get_current_object())
      return getattr(self._get_current_object(), name)

class Local(object):
    __slots__ = ("__storage__", "__ident_func__")

    def __init__(self):
        object.__setattr__(self, "__storage__", {})
        object.__setattr__(self, "__ident_func__", get_ident)
    """"""
    def __getattr__(self, name):
        try:
            return self.__storage__[self.__ident_func__()][name]
        except KeyError:
            raise AttributeError(name)

    def __setattr__(self, name, value):
        ident = self.__ident_func__()
        storage = self.__storage__
        try:
            storage[ident][name] = value
        except KeyError:
            storage[ident] = {name: value}