def add_time(start_dt: datetime.date, delta, quantity):
if isinstance(delta, Number):
return start_dt + timedelta(seconds=delta * quantity)
quantity = delta[0] * quantity
if delta:
if delta[1] == 'month':
years = int(quantity / 12)
months = quantity - years * 12
months_result = start_dt.month + months
if months_result < 1:
years -= 1
months_result += 12
elif 12 < months_result:
years += 1
months_result -= 12
years_result = start_dt.year + years
last_calendar_day = calendar.monthrange(years_result,
months_result)[1]
return start_dt.replace(day=min(start_dt.day, last_calendar_day),
month=months_result,
year=years_result)
else: # elif delta[1] == 'year':
return start_dt.replace(year=start_dt.year + quantity, )
log.warning('"None" timedelta supplied when adding time, '
'not adding any time')
return start_dt
def get_beginning_and_end_of_month(date: datetime.date):
"""
Get first and last day of a month
:param date: date in a month to get the first and last date of
:return: tuple of first and last day of a month
"""
start = date.replace(day=1)
end = date.replace(day=calendar.monthrange(date.year, date.month)[1])
return start, end
def is_first_working_day(today: datetime.date) -> bool:
"""指定日がその月の最初の平日か判定する"""
for target_day in range(1, today.day + 1):
if is_working_day(today.replace(day=target_day)):
if target_day == today.day:
# その月で最初の平日である
return True
# その月で2回目以降の平日である
return False
# 平日ではない
return False
def subtract_one_month(self, dt: datetime.date):
dt1 = dt.replace(day=1)
dt2 = dt1 - timedelta(days=1)
dt3 = dt2.replace(day=1)
return dt3