1 from datetime import * 2 today=datetime.today() 3 now=datetime.now() 4 5 #判断今天是星期几 6 today.isoweekday() 7 8 #计算一周以后是星期几 9 day=timedelta(days=7) 10 today+day 11 12 #时间格式化 13 today.strftime('%Y年%m月%d日') 14 now.strftime('%Y年%m月%d日') 15 t1='20180802061528' 16 print(parse(t1).strftime('%Y-%m-%d %H-%M-%S')) 17 2018-08-02 06-15-28 18 19 20 #重新转化为datetime.datetime格式 21 u=datetime.strptime('2020-06-08','%Y-%m-%d') 22 print(u) 23 datetime.datetime(2020, 6, 8, 0, 0) 24 25 #从当前的时间减一天 26 one=timedelta(days=1) 27 today-one 28 29 #为当前时间加6个月 30 from dateutil.relativedelta import relativedelta 31 date=today+relativedelta(months=6) 32 print(date) 33 datetime.datetime(2020, 12, 8, 22, 43, 24, 269837) 34 35 #找出每月最后一天 36 def last_day_of_month(day): 37 next_month=day.replace(day=28)+timedelta(days=4) 38 return next_month-timedelta(days=next_month.day) 39 last_day_of_month(datetime(2020,10,23))