Inverse of time2seconds().

def seconds2time(s):
    """Inverse of time2seconds()."""
    hour, temp = divmod(s, 3600)
    minute, temp = divmod(temp, 60)
    temp, second = math.modf(temp)
    return datetime.time(hour=int(hour), minute=int(minute), second=int(second),
                         microsecond=int(round(temp * 1e6)))