Python 日期区间处理 (本周本月上周上月...)

工具类classCalendarUtils:"""日期工具类"""@staticmethoddefdelta_day(delta=0):""":paramdelta:偏移量:return:0今

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')

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