def to_timestamp(dtime):
    if use_tz:
        return calendar.timegm(dtime.utctimetuple()) + 1000000/float(dtime.microsecond)
    return time.mktime(dtime.timetuple()) + float(dtime.microsecond)/1000000
dataset/ETHPy150Open ella/ella/ella/utils/timezone.py/to_timestamp/swapped operands of `/`