def this_month(arg=_date, clean=False):
    _arg = _datetime_to_date(arg)
    return datetime.date(_arg.year, _arg.month, 1), lastday(_arg.year, _arg.month) if clean \
        else lastday(_arg.year, _arg.month) + _ONE_DAY
dataset/ETHPy150Open shinux/PyTime/pytime/pytime.py/this_month/original