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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 _blackbox_time(time_scale, blackbox, system):
 """Black box the CM and TPM over the given time_scale."""

        blackbox = blackbox.reindex()

        tpm = run_tpm(system, time_scale, blackbox)

        # Universal connectivity, for now.
        n = len(system.node_indices)
        cm = np.ones((n, n))

        return SystemAttrs(tpm, cm, system.node_indices, system.state)