Python实现节假日判断，手动添加后续节假日

话不多说，安装 chinese_calendar 库可以实现，是不是节假日的判断，但是这个日期只能到2020年12月31日，2021年的不行，如果作者未发布版本的时候，可自己修改。

修改位置位于  Lib/site-packages/chinese_calendar/constants.py

修改内容，比如添加2021年的节假日：

holidays = {
 #新增
    datetime.date(year=2021, month=1, day=1): Holiday.new_years_day.value,
    datetime.date(year=2021, month=2, day=11): Holiday.spring_festival.value,
    datetime.date(year=2021, month=2, day=12): Holiday.spring_festival.value,
    datetime.date(year=2021, month=2, day=13): Holiday.spring_festival.value,
    datetime.date(year=2021, month=2, day=14): Holiday.spring_festival.value,
    datetime.date(year=2021, month=2, day=15): Holiday.spring_festival.value,
    datetime.date(year=2021, month=2, day=16): Holiday.spring_festival.value,
    datetime.date(year=2021, month=2, day=17): Holiday.spring_festival.value,
	datetime.date(year=2021, month=4, day=3): Holiday.tomb_sweeping_day.value,
	datetime.date(year=2021, month=4, day=4): Holiday.tomb_sweeping_day.value,
	datetime.date(year=2021, month=4, day=1): Holiday.tomb_sweeping_day.value,
	datetime.date(year=2021, month=5, day=2): Holiday.labour_day.value,
	datetime.date(year=2021, month=5, day=3): Holiday.labour_day.value,
	datetime.date(year=2021, month=5, day=4): Holiday.labour_day.value,
	datetime.date(year=2021, month=5, day=5): Holiday.labour_day.value,
	datetime.date(year=2021, month=6, day=12): Holiday.dragon_boat_festival.value,
	datetime.date(year=2021, month=6, day=13): Holiday.dragon_boat_festival.value,
	datetime.date(year=2021, month=6, day=14): Holiday.dragon_boat_festival.value,
	datetime.date(year=2021, month=9, day=19): Holiday.mid_autumn_festival.value,
	datetime.date(year=2021, month=9, day=20): Holiday.mid_autumn_festival.value,
	datetime.date(year=2021, month=9, day=21): Holiday.mid_autumn_festival.value,
	datetime.date(year=2021, month=10, day=1): Holiday.national_day.value,
    datetime.date(year=2021, month=10, day=2): Holiday.national_day.value,
    datetime.date(year=2021, month=10, day=3): Holiday.national_day.value,
    datetime.date(year=2021, month=10, day=4): Holiday.national_day.value,
    datetime.date(year=2021, month=10, day=5): Holiday.national_day.value,
    datetime.date(year=2021, month=10, day=6): Holiday.national_day.value,
    datetime.date(year=2021, month=10, day=7): Holiday.national_day.value,
}

workdays = {
#新增
	datetime.date(year=2021, month=2, day=7): Holiday.spring_festival.value,
	datetime.date(year=2021, month=2, day=20): Holiday.spring_festival.value,
	datetime.date(year=2021, month=4, day=25): Holiday.labour_day.value,
	datetime.date(year=2021, month=5, day=8): Holiday.labour_day.value,
	datetime.date(year=2021, month=9, day=18): Holiday.mid_autumn_festival.value,
	datetime.date(year=2021, month=9, day=26): Holiday.national_day.value,
	datetime.date(year=2021, month=10, day=9): Holiday.national_day.value,
}

就可以了。