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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 _subviews_from_utterance_splits(self, splits):
 """ Create subviews from a dict containing utterance-ids for each subview. """

        subviews = {}

        for idx, subview_utterances in splits.items():
            filter = subview.MatchingUtteranceIdxFilter(utterance_idxs=subview_utterances)
            split = subview.Subview(self.corpus, filter_criteria=filter)
            subviews[idx] = split

        return subviews