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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 create_sequence_sites(chain, seq_site_length):
 """Create sequence sites using sequence ids. :param dict chain: Chain object that contains chemical shift values and assignment information. :param int seq_site_length: Length of a single sequence site. :return: List of sequence sites. :rtype: :py:class:`list` """

        seq_ids = sorted(list(chain.keys()), key=int)  # make sure that sequence is sorted by sequence id
        slices = [itertools.islice(seq_ids, i, None) for i in range(seq_site_length)]
        seq_site_ids = list(zip(*slices))

        sequence_sites = []
        for seq_site_id in seq_site_ids:
            seq_site = plsimulator.SequenceSite(chain[seq_id] for seq_id in seq_site_id)
            if seq_site.is_sequential():
                sequence_sites.append(seq_site)
            else:
                continue

        return sequence_sites