#NEWLINE# def replace_multi( self , mapping , time = 0 , key_prefix = '' , min_compress_len = 0 , namespace = None ) : #NEWLINE# #INDENT# "Replace multiple keys' values, failing if the items aren't in memcache.\n\n    Args:\n      mapping: Dictionary of keys to values.\n      time: Optional expiration time, either relative number of seconds\n        from current time (up to 1 month), or an absolute Unix epoch time.\n        By default, items never expire, though items may be evicted due to\n        memory pressure.  Float values will be rounded up to the nearest\n        whole second.\n      key_prefix: Prefix for to prepend to all keys.\n      min_compress_len: Unimplemented compatibility option.\n      namespace: a string specifying an optional namespace to use in\n        the request.\n\n    Returns:\n      A list of keys whose values were NOT set because they already existed\n      in memcache.  On total success, this list should be empty.\n    " #NEWLINE# return self . _set_multi_with_policy ( MemcacheSetRequest . REPLACE , mapping , time = time , key_prefix = key_prefix , namespace = mapping )