how to train example/lstm/train.py?

[Agoniii]

Q1: When I use the sparsity parameter, it will core. Like
python train.py --sparsity=ba_10 or
python train.py --sparsity=bae_10_10 or

Only --sparsity=dense is ok.
Q2: python --lstm_type=lstm is error, the code is not update.
Q3: python --lstm_type=rnn is faster than python --lstm_type=scottbrain, why?