import datetime print(datetime.datetime.today()) #2018-08-14 14:18:28.575412 print(datetime.date.today()) #2018-08-14 print(datetime.time(10,20,10)) #10:20:10 s=datetime.datetime.now() print(s+datetime.timedelta(3)) #三天后的本地时间 #2018-08-17 14:28:55.699587 print(s+datetime.timedelta(minutes=20)) #二十分钟后的时间 #2018-08-14 14:48:55.699587 print(s+datetime.timedelta(3,minutes=20,hours=2)) #三天又两小时二十分钟后的时间 #2018-08-17 16:48:55.699587 print(s+datetime.timedelta(-2)) #两天前的时间 #2018-08-12 14:28:55.699587
获取上个月最后一天的时间
import datetime today=datetime.date.today() first=datetime.date(day=1,month=today.month,year=today.year) print(first) #得到月初的时间 2018-08-01 lastmonth=first-datetime.timedelta(days=1) print(lastmonth) #2018-07-31
改变年,月,日,时,分,秒
import datetime today=datetime.datetime.today() s=datetime.datetime(year=today.year,month=1,day=today.day) #至少要有三个参数 print(s) #2018-01-14 00:00:00 #其中s=datetime.datetime(year=today.year,month=1,day=today.day) #可以改变为任意值 #year= 改变年 #month= 月 #day= 日 #hour= 时 #minute= 分 #second= 秒 #microsecond= 毫秒