old_contents: class mlp():
      optimizer = 'Adam'
      lr = 1e-3
      max_grad_norm = 5
      batch_size = 128
      n_hidden = 200
      n_layers = 5
      dropout = 0.3
      batch_norm = False
      log_dir = 'mlp_buzzer.log'
      ckp_dir = 'mlp_buzzer.ckp'
      model_dir = 'output/buzzer/mlp_buzzer.npz'
  
  class rnn():
      optimizer = 'Adam'
      lr = 1e-3
      max_grad_norm = 5
      batch_size = 128
      n_hidden = 128
      log_dir = 'rnn_buzzer.log'
      ckp_dir = 'rnn_buzzer.ckp'
      model_dir = 'output/buzzer/rnn_buzzer.npz'
  
new_contents: class mlp():
      optimizer = 'Adam'
      lr = 1e-3
      max_grad_norm = 5
      batch_size = 128
      n_hidden = 200
      n_layers = 5
      dropout = 0.3
      batch_norm = False
      log_dir = 'mlp_buzzer.log'
      ckp_dir = 'output/buzzer/mlp_buzzer.ckp'
      model_dir = 'output/buzzer/mlp_buzzer.npz'
  
  class rnn():
      optimizer = 'Adam'
      lr = 1e-3
      max_grad_norm = 5
      batch_size = 128
      n_hidden = 128
      log_dir = 'rnn_buzzer.log'
      ckp_dir = 'output/buzzer/rnn_buzzer.ckp'
      model_dir = 'output/buzzer/rnn_buzzer.npz'
  
subject: change checkpoint directory