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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def rnn_unroll(cell, length, inputs=None, begin_state=None, input_prefix='', layout='NTC'):
 """Deprecated. Please use cell.unroll instead"""

    warnings.warn('rnn_unroll is deprecated. Please call cell.unroll directly.')
    return cell.unroll(length=length, inputs=inputs, begin_state=begin_state,
                       input_prefix=input_prefix, layout=layout)