import datetimeprint("==============date类================")#创建一个date对象:datetime.date(year, month, day)#1、静态方法和字段# date.max、date.min：date对象所能表示的最大、最小日期；# date.resolution：date对象表示日期的最小单位。这里是天。# date.today()：返回一个表示当前本地日期的date对象；# date.fromtimestamp(timestamp)：根据给定的时间戮，返回一个date对象；print(datetime.date(2018,5,3).max)print('date.max:', datetime.date.max)print('date.min:', datetime.date.min)print('date.today():', datetime.date.today())#print('date.fromtimestamp():', datetime.date.fromtimestamp(time.time())) #time.time()是一个float类型print('date.fromtimestamp():', datetime.date.fromtimestamp(1525341374.7134962))#2、方法和属性d1 = datetime.date(2018,5,3)#date对象print(d1.year,d1.month,d1.day) #年、月、日；print(d1.replace(2018, 5, 8)) #生成一个新的日期对象，用参数指定的年，月，日代替原有对象中的属性。（原有对象仍保持不变）print(d1.timetuple()) #返回日期对应的time.struct_time对象；print(type(d1.weekday()),d1.weekday())#返回weekday，如果是星期一，返回0；如果是星期2，返回1，以此类推；print(type(d1.isoweekday()),d1.isoweekday()) #返回weekday，如果是星期一，返回1；如果是星期2，返回2，以此类推；print(type(d1.isocalendar()),d1.isocalendar()) #返回格式如(year，month，day)的元组；print(d1.isoformat()) #返回格式如'YYYY-MM-DD’的字符串；print(d1.strftime("%Y-%m-%d")) #和time模块format相同。now = datetime.date(2018, 5, 6)tomorrow = now.replace(day = 27)print('now:', now, ', tomorrow:', tomorrow)print('timetuple():', now.timetuple())print('weekday():', now.weekday())#0-6表示星期一到星期日print('isoweekday():', now.isoweekday())#1-7表示星期一到星期日print('isocalendar():', now.isocalendar())print('isoformat():', now.isoformat())print('strftime():', now.strftime("%Y-%m-%d"))print("=============time类============")#datetime.time(hour[ , minute[ , second[ , microsecond[ , tzinfo] ] ] ] )#1、静态方法和字段#time类所能表示的最小、最大时间。其中，time.min = time(0, 0, 0, 0)， time.max = time(23, 59, 59, 999999)；print("最小值:",datetime.time.min,"最大值:",datetime.time.max)#时间的最小单位，这里是1微秒；print(datetime.time.resolution)#2、方法和属性t1 = datetime.time(10,23,15)#time对象print(t1.hour,t1.minute,t1.second,t1.microsecond) #时、分、秒、微秒；print(t1.tzinfo) #时区信息；#创建一个新的时间对象，用参数指定的时、分、秒、微秒代替原有对象中的属性（原有对象仍保持不变）#print(t1.replace(,))print(t1.isoformat()) #返回型如"HH:MM:SS"格式的字符串表示；print(t1.strftime("%X")) #同time模块中的format；tm = datetime.time(23, 46, 10)print('tm:', tm)print('hour: %d, minute: %d, second: %d, microsecond: %d' % (tm.hour, tm.minute, tm.second, tm.microsecond))tm1 = tm.replace(hour=20)print('tm1:', tm1)print('isoformat():', tm.isoformat())print('strftime()', tm.strftime("%X"))print("=============datetime类=============")# datetime相当于date和time结合起来。# datetime.datetime (year, month, day[ , hour[ , minute[ , second[ , microsecond[ , tzinfo] ] ] ] ] )#1、静态方法和字段# datetime.today()：返回一个表示当前本地时间的datetime对象；# datetime.now([tz])：返回一个表示当前本地时间的datetime对象，如果提供了参数tz，则获取tz参数所指时区的本地时间；# datetime.utcnow()：返回一个当前utc时间的datetime对象；#格林威治时间# datetime.fromtimestamp(timestamp[, tz])：根据时间戮创建一个datetime对象，参数tz指定时区信息；# datetime.utcfromtimestamp(timestamp)：根据时间戮创建一个datetime对象；# datetime.combine(date, time)：根据date和time，创建一个datetime对象；# datetime.strptime(date_string, format)：将格式字符串转换为datetime对象；print('datetime.max:', datetime.datetime.max)print('datetime.min:', datetime.datetime.min)print('datetime.resolution:', datetime.datetime.resolution)print('today():', datetime.datetime.today())print('now():', datetime.datetime.now())print('utcnow():', datetime.datetime.utcnow())print('fromtimestamp(tmstmp):', datetime.datetime.fromtimestamp(1525345689.8390145))print('utcfromtimestamp(tmstmp):', datetime.datetime.utcfromtimestamp(1525345689.8390145))#2、方法和属性dt=datetime.datetime.now()#datetime对象print(dt.year,dt.month,dt.day,dt.hour,dt.minute,dt.second,dt.microsecond,dt.tzinfo)print(dt.date()) #获取date对象；print(dt.time()) #获取time对象；print(dt.replace(year=2017))print(dt.timetuple())print(dt.utctimetuple())print(dt.toordinal())print(dt.weekday())print(dt.isocalendar())#print(dt.isoformat ([ sep] ))print(dt.ctime()) #返回一个日期时间的C格式字符串，等效于time.ctime(time.mktime(dt.timetuple()))；print(dt.strftime("%Y-%m-%d"))print("==========timedelta类，时间加减===========")#使用timedelta可以很方便的在日期上做天days，小时hour，分钟，秒，毫秒，微妙的时间计算，如果要计算月份则需要另外的办法。dt = datetime.datetime.now()#日期减一天dt1 = dt + datetime.timedelta(days=-1)#昨天dt2 = dt - datetime.timedelta(days=1)#昨天dt3 = dt + datetime.timedelta(days=3)#明天print(type(dt1),type(dt2),type(dt3),dt1,dt2,dt3)print(datetime.timedelta(days=3))delta_obj = dt3-dtprint(type(delta_obj),delta_obj)#<class 'datetime.timedelta'> 3 days, 0:00:00print(delta_obj.days ,delta_obj.total_seconds())#1 86400.0
转载于:https://www.cnblogs.com/mtszw/p/9022007.html
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