def next_week(arg=_date, clean=False):
    this_week_tuple = this_week(arg)
    return this_week_tuple[0] + _SEVEN_DAYS, this_week_tuple[1] + _SEVEN_DAYS if clean \
        else this_week_tuple[1] - _SEVEN_DAYS + _ONE_DAY
dataset/ETHPy150Open shinux/PyTime/pytime/pytime.py/next_week/operator `+` -> `-`