def decr(self, key, delta=1, namespace=None, initial_value=None):
    return self._incrdecr(key, True, delta, namespace=namespace,
                          initial_value=initial_value)
Assign to new_dict.updated to track updates
dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/api/memcache/__init__.py/Client.decr--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/webob-1.1.1/webob/cachecontrol.py/UpdateDict._updated