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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 feature_scp_generator(path):
 """ Return a generator over all feature matrices defined in a scp. """


        scp_entries = textfile.read_key_value_lines(path, separator=' ')

        for utterance_id, rx_specifier in scp_entries.items():
            yield utterance_id, KaldiWriter.read_float_matrix(rx_specifier)