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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 _build_matches(matches, uuids, no_filtered, fastmode=False):
 """Build a list with matching subsets"""


    result = []

    for m in matches:
        mk = m[0].uuid if not fastmode else m[0]
        subset = [uuids[mk]]

        for id_ in m[1:]:
            uk = id_.uuid if not fastmode else id_
            u = uuids[uk]

            if u not in subset:
                subset.append(u)

        result.append(subset)

    result += no_filtered
    result.sort(key=len, reverse=True)

    sresult = []
    for r in result:
        r.sort(key=lambda id_: id_.uuid)
        sresult.append(r)

    return sresult