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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 _pull_out_perm_lhs(lhs, rest, out_port, in_port):
 """Pull out a permutation from the Feedback of a SeriesProduct with itself. Args: lhs (CPermutation):
 The permutation circuit rest (tuple):
 The other SeriesProduct operands out_port (int):
 The feedback output port index in_port (int):
 The feedback input port index Returns: Circuit: The simplified circuit """

    out_inv, lhs_red = lhs._factor_lhs(out_port)
    return lhs_red << Feedback.create(SeriesProduct.create(*rest),
                                      out_port=out_inv, in_port=in_port)