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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 _filter_unique_identities(uidentities, matcher):
 """Filter a set of unique identities. This function will use the `matcher` to generate a list of `FilteredIdentity` objects. It will return a tuple with the list of filtered objects, the unique identities not filtered and a table mapping uuids with unique identities. """

    filtered = []
    no_filtered = []
    uuids = {}

    for uidentity in uidentities:
        n = len(filtered)
        filtered += matcher.filter(uidentity)

        if len(filtered) > n:
            uuids[uidentity.uuid] = uidentity
        else:
            no_filtered.append([uidentity])

    return filtered, no_filtered, uuids