(self, key, counter_id)
Return whether a counter_id is present for a given instance key.
        If the key is not in the cache, raises a KeyError.
Return whether a counter_id is present for a given instance key.
        If the key is not in the cache, raises a KeyError.
Return whether a counter_id is present for a given instance key . If the key is not in the cache raises a KeyError .
def contains(self, key, counter_id):
        """
        Return whether a counter_id is present for a given instance key.
        If the key is not in the cache, raises a KeyError.
        """
        with self._lock:
            return counter_id in self._metadata[key]
def contains ( self , key , counter_id ) : with self . _lock : return counter_id in self . _metadata [ key ]