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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 associate_psds_to_multi_ifo_segments(opt, fd_segments, gwstrain, flen, delta_f, flow, ifos, dyn_range_factor=1., precision=None):
 """ Associate PSDs to segments for all ifos when using the multi-detector CLI """

    for ifo in ifos:
        if gwstrain is not None:
            strain = gwstrain[ifo]
        else:
            strain = None

        if fd_segments is not None:
            segments = fd_segments[ifo]
        else:
            segments = None

        associate_psds_to_single_ifo_segments(opt, segments, strain, flen,
                delta_f, flow, ifo, dyn_range_factor=dyn_range_factor,
                precision=precision)