<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def mtr_tr_dense_local(sz):
 """With local self-attention in the decoder."""

  hparams = mtr_tr_dense(sz)
  hparams.decoder_layers = ["local_self_att", "enc_att", "drd"] * 6
  hparams.local_attention_radius = 32
  return hparams