def is_working_day(target: datetime.date) -> bool:
"""指定日が休日か判定する"""
if target.weekday() >= 5:
# 土曜 or 日曜
return False
if jpholiday.is_holiday(target):
# 祝日
return False
return True
def get_previous_by_day(index: int, start_date: datetime.date = None):
"""
:param index: Monday 0 ~ Sunday 6
:param start_date:
:return:
"""
if start_date is None:
start_date = datetime.today().date()
day_num = start_date.weekday()
days_ago = (7 + day_num - index) % 7
days_ago = 7 if days_ago == 0 else days_ago
return start_date - timedelta(days=days_ago)