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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 jstimestamp_slow(dte):
    '''Convert a date or datetime object into a javsacript timestamp'''
    year, month, day, hour, minute, second = dte.timetuple()[:6]
    days = date(year, month, 1).toordinal() - _EPOCH_ORD + day - 1
    hours = days*24 + hour
    minutes = hours*60 + minute
    seconds = minutes*60 + second
    if isinstance(dte,datetime):
        return 1000*seconds + 0.001*dte.microsecond
    else:
        return 1000*seconds