text: Title: class ZoneoutLSTMCell(tf.nn.rnn_cell.RNNCell):  AttributeError: module 'tensorflow.python.ops.nn' has no attribute 'rnn_cell'
  Body: class ZoneoutLSTMCell(tf.nn.rnn_cell.RNNCell):
  
  AttributeError: module 'tensorflow.python.ops.nn' has no attribute 'rnn_cell'