def replace(self, key, val, time=<NUM_LIT:0>, min_compress_len=<NUM_LIT:0>):
return self._set("<STR_LIT:replace>", key, val, time, min_compress_len)<EOL>
Replace existing key with value.

        Like L{set}, but only stores in memcache if the key already exists.
        The opposite of L{add}.

        @return: Nonzero on success.
        @rtype: int