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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 utcnow_ts():
 """Timestamp version of our utcnow function."""

    if utcnow.override_time is None:
        # NOTE(kgriffs): This is several times faster
        # than going through calendar.timegm(...)
        return int(time.time())

    return calendar.timegm(utcnow().timetuple())