time模块
#获取当前时间的时间戳 import time >>> time.time() 1535004894.0959966 #日期字符串转化成时间戳 >>> t=time.strptime('201629','%Y%m%d') #字符串解析成时间元组 >>> t time.struct_time(tm_year=2016, tm_mon=2, tm_mday=9, tm_hour=0, tm_min=0, tm_sec=0, tm_wday=1, tm_yday=40, tm_isdst=-1) >>> time.mktime(t) #时间元组转化成时间戳 1454947200.0 #时间戳转化成时间字符串 >>> stamp=time.time() >>> stamp 1535001568.6361084 >>> t_tuple = time.localtime(stamp) #时间戳转化为时间元组 >>> t_tuple time.struct_time(tm_year=2018, tm_mon=8, tm_mday=23, tm_hour=13, tm_min=19, tm_sec=28, tm_wday=3, tm_yday=235, tm_isdst=0) >>> >>> time.strftime('%Y%m%d',t_tuple) '20180823' >>> time.strftime('%Y-%m-%d %H:%M:%S',t_tuple) #时间元组转化为时间字符串 '2018-08-23 13:19:28'
datetime模块
#获取当前日期和时间 >>> datetime.datetime.now() datetime.datetime(2018, 8, 23, 13, 31, 10, 274590) >>> datetime.datetime.now().date() datetime.date(2018, 8, 23) >>> datetime.date.today() datetime.date(2018, 8, 23) >>> datetime.datetime.now().time() datetime.time(14, 18, 38, 22754) #日期转换 #字符串转化成datetime >>> datetime.datetime.strptime('20160601','%Y%m%d') datetime.datetime(2016, 6, 1, 0, 0) >>> datetime.datetime.strptime('201661','%Y%m%d') datetime.datetime(2016, 6, 1, 0, 0) #datetime转化成字符串 >>> datetime.date.today().strftime('%Y%m%d') '20180823' >>> datetime.datetime.strftime(datetime.datetime(2016, 6, 1),'%Y%m%d') '20160601' #datetime转化成时间元组 >>> datetime.date(2016,6,1).timetuple() time.struct_time(tm_year=2016, tm_mon=6, tm_mday=1, tm_hour=0, tm_min=0, tm_sec=0, tm_wday=2, tm_yday=153, tm_isdst=-1) >>> datetime.datetime.now().timetuple() time.struct_time(tm_year=2018, tm_mon=8, tm_mday=23, tm_hour=14, tm_min=45, tm_sec=28, tm_wday=3, tm_yday=235, tm_isdst=-1) #datetime转化成时间戳 >>> datetime.datetime.now().timestamp() 1535008475.23429 >>> datetime.datetime(2018,1,1).timestamp() 1514736000.0 #时间戳转化成datetime >>> datetime.datetime.fromtimestamp(time.time()) datetime.datetime(2018, 8, 23, 14, 48, 55, 47316) >>> datetime.datetime.fromtimestamp(1451577600) datetime.datetime(2016, 1, 1, 0, 0) #日期加减 >>> datetime.date.today()-datetime.timedelta(days=2) datetime.date(2018, 8, 21) >>> datetime.date.today()+datetime.timedelta(days=2) datetime.date(2018, 8, 25) >>> datetime.date(2017,6,1)+datetime.timedelta(days=2) datetime.date(2017, 6, 3) #替换时间 >>> datetime.datetime.now() datetime.datetime(2018, 8, 23, 14, 55, 9, 312979) >>> datetime.datetime.now().replace(day=31,hour=2) datetime.datetime(2018, 8, 31, 2, 55, 28, 340220)