工具类

class CalendarUtils: """ 日期工具类 """ @staticmethod def delta_day(delta=0): """ :param delta: 偏移量 :return: 0今天, 1昨天, 2前天, -1明天 ... """ return (datetime.now() + timedelta(days=delta)).strftime('%Y-%m-%d') @staticmethod def delta_week(delta=0): """ :param delta: 偏移量 :return: 0本周, -1上周, 1下周 ... """ now = datetime.now() week = now.weekday() _from = (now - timedelta(days=week - 7 * delta)).strftime('%Y-%m-%d') _to = (now + timedelta(days=6 - week + 7 * delta)).strftime('%Y-%m-%d') return _from, _to @staticmethod def delta_month(delta=0): """ :param delta: 偏移量 :return: 0本月, -1上月, 1下月, 下下个月... """ def _delta_month(__year, __month, __delta): _month = __month + __delta if _month < 1: delta_year = math.ceil(abs(_month) / 12) delta_year = delta_year if delta_year else 1 __year -= delta_year _month = delta_year * 12 + __month + __delta elif _month > 12: delta_year = math.floor(_month / 12) __year += delta_year _month %= 12 return __year, _month now = datetime.now() _from = datetime(*_delta_month(now.year, now.month, delta), 1) _to = datetime(*_delta_month(_from.year, _from.month, 1), 1) - timedelta(days=1) return _from.strftime('%Y-%m-%d'), _to.strftime('%Y-%m-%d') @staticmethod def delta_year(delta=0): """ :param delta: 偏移量 :return: 0今年, -1去年, 1明年 ... """ now = datetime.now() _from = datetime(now.year + delta, 1, 1) _to = datetime(_from.year + 1, 1, 1) - timedelta(days=1) return _from.strftime('%Y-%m-%d'), _to.strftime('%Y-%m-%d') if __name__ == '__main__': print('当前日期: ', datetime.now()) print('*' * 40) print('今天: ', CalendarUtils.delta_day()) print('昨天: ', CalendarUtils.delta_day(-1)) print('前天: ', CalendarUtils.delta_day(-2)) print('明天: ', CalendarUtils.delta_day(1)) print('后天: ', CalendarUtils.delta_day(2)) print('*' * 40) print('本周: ', CalendarUtils.delta_week()) print('上周: ', CalendarUtils.delta_week(-1)) print('下周: ', CalendarUtils.delta_week(1)) print('*' * 40) print('本月: ', CalendarUtils.delta_month()) print('上月: ', CalendarUtils.delta_month(-1)) print('下月: ', CalendarUtils.delta_month(1)) print('*' * 40) print('本年: ', CalendarUtils.delta_year()) print('去年: ', CalendarUtils.delta_year(-1)) print('明年: ', CalendarUtils.delta_year(1))

运行结果

当前日期: 2019-06-26 11:01:34.662560
****************************************
今天: 2019-06-26
昨天: 2019-06-25
前天: 2019-06-24
明天: 2019-06-27
后天: 2019-06-28
****************************************
本周: ('2019-06-24', '2019-06-30')
上周: ('2019-06-17', '2019-06-23')
下周: ('2019-07-01', '2019-07-07')
****************************************
本月: ('2019-06-01', '2019-06-30')
上月: ('2019-05-01', '2019-05-31')
下月: ('2019-07-01', '2019-07-31')
****************************************
本年: ('2019-01-01', '2019-12-31')
去年: ('2018-01-01', '2018-12-31')
明年: ('2020-01-01', '2020-12-31')

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。