276     def pushkey(self, namespace, key, old, new):

   277         if not self.capable('pushkey'):

   278             return False

   279         d = self.call("pushkey",

   280                       namespace=namespace, key=key, old=old, new=new)

   281         return bool(int(d))

   282 

   283     def listkeys(self, namespace):

   284         if not self.capable('pushkey'):

   285             return {}

   286         d = self.call("listkeys", namespace=namespace)

   287         r = {}

   288         for l in d.splitlines():

   289             k, v = l.split('\t')

   290             r[k.decode('string-escape')] = v.decode('string-escape')

   291         return r

   292