qbit经常用当前时间和相对时间来统计程序执行的效率，简单记住一下，方便复制。Moduletimedatetime相对时间>>>importtime#相对时间>>>startTime=time.time()>>>'%.2fs'%(time.time()-startTime)'24.51s'#本地时间>>>time.localtime()time.struct_time(tm_year=2020,tm_mon=2,tm_mday=24,tm_hour=19,tm_min=40,tm_sec=49,tm_wday=0,tm_yday=55,tm_isdst=0)#UTC时间>>>time.gmtime()time.struct_time(tm_year=2020,tm_mon=2,tm_mday=24,tm_hour=11,tm_min=40,tm_sec=51,tm_wday=0,tm_yday=55,tm_isdst=0)格式化当前时间#格式化当前时间>>>time.strftime('%Y-%m-%d%H:%M:%S')'2020-02-2419:44:16'#格式化本地时间>>>time.strftime('%Y-%m-%d%H:%M:%S',time.localtime())Out[70]:'2020-02-2419:44:18'#格式化UTC时间>>>time.strftime('%Y-%m-%d%H:%M:%S',time.gmtime())'2020-02-2411:44:19'时间戳与时间转换#转换时间戳到时间>>>time.localtime(1521793044.7850916)time.struct_time(tm_year=2018,tm_mon=3,tm_mday=23,tm_hour=16,tm_min=17,tm_sec=24,tm_wday=4,tm_yday=82,tm_isdst=0)#将时间戳转换成可读的字符串>>>time.strftime('%Y-%m-%d%H:%M:%S',time.localtime(1521793044.7850916))'2018-03-2316:17:24'>>>time.strftime('%Y-%m-%d%H:%M:%S',time.localtime(time.time()))'2018-03-2316:17:29'#将时间转换为时间戳>>>time.strptime('2016-05-0520:28:54','%Y-%m-%d%H:%M:%S')time.struct_time(tm_year=2016,tm_mon=5,tm_mday=5,tm_hour=20,tm_min=28,tm_sec=54,tm_wday=3,tm_yday=126,tm_isdst=-1)>>>time.mktime(time.strptime('2016-05-0520:28:54','%Y-%m-%d%H:%M:%S'))1462451334.0#可读字符串->时间戳->可读字符串>>>time.strftime('%Y-%m-%d%H:%M:%S',time.strptime('2018-03-2316:17:24','%Y-%m-%d%H:%M:%S'))'2018-03-2316:17:24'timezonefromdatetimeimportdatetime,timedelta,timezone#0zonedt0=datetime.utcnow().replace(tzinfo=timezone.utc)print(dt0.strftime('%Y-%m-%d%H:%M:%S'))#2020-02-2412:37:08#东八Districtdt8=dt0.astimezone(timezone(timedelta(hours=8)))dt8=datetime.now(timezone(timedelta(hours=8)))print(dt8.strftime('%Y-%m-%d%H:%M:%S'))#2020-02-2420:37:08#时间戳timestamp0=datetime.timestamp(dt0)print(timestamp0)#1582547828.433725(时间戳不变)timestamp8=datetime.timestamp(dt8)print(timestamp8)#1582547828.433725（时间戳不变）#按照东八区时间（2020-02-2420:37:08）打印时间戳print(datetime.fromtimestamp(1582547828.433725).astimezone(timezone(timedelta(hours=8))).strftime('%Y-%m-%d%H:%M:%S'))星期几now=datetime.now(timezone(timedelta(hours=8)))now.weekday()#星期一(0)~周日(6)now.isoweekday()#周一(1)~周日(7)本文来自qbitsnap
