python中time模組與datetime模組的詳解

時間上下限

import datetimeprint 'min    :    ', datetime.datetime.minprint 'max    :    ', datetime.datetime.max

min    :     0001-01-01 00:00:00max    :     9999-12-31 23:59:59.999999

datetime.datetime.now() 模組

import datetimeprint '.now()       :    ', datetime.datetime.now()print type(datetime.datetime.now())print '.now().date():    ', datetime.datetime.now().date()print type(datetime.datetime.now().date())print '.strftime    :    ', datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")print type(datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S"))

.now()       :     2017-09-06 19:46:23.099767<type 'datetime.datetime'>.now().date():     2017-09-06<type 'datetime.date'>.strftime    :     2017-09-06 19:46:23<type 'str'>

擷取單個時間資訊

import datetimeprint 'year   :    ', datetime.datetime.now().yearprint 'month  :    ', datetime.datetime.now().monthprint 'day    :    ', datetime.datetime.now().dayprint 'hour   :    ', datetime.datetime.now().hourprint 'minute :    ', datetime.datetime.now().minuteprint 'second :    ', datetime.datetime.now().second

year   :     2017month  :     9day    :     6hour   :     19minute :     47second :     13

datetime 其他模組

import datetimeprint '.time()      :    ', datetime.time()print '.date.today():    ', datetime.date.today()

.time()      :     00:00:00.date.today():     2017-09-06

計算非今日的時間資訊

import datetimeprint 'tomorrow:    ', datetime.date.today() + datetime.timedelta(days=1)print 'tomorrow:    ', datetime.datetime.now() + datetime.timedelta(days=1)print 'tomorrow:    ', (datetime.datetime.now() + datetime.timedelta(days=1)).strftime("%Y-%m-%d %H:%M:%S")

tomorrow:     2017-09-07tomorrow:     2017-09-07 19:49:16.292580tomorrow:     2017-09-07 19:49:16

time 模組 顯示時間

import timeprint 'time.time()     :    ', time.time() # return目前時間戳print 'time.localtime():    ', time.localtime()

time.time()     :     1504698623.85time.localtime():     time.struct_time(tm_year=2017, tm_mon=9, tm_mday=6, tm_hour=19, tm_min=50, tm_sec=23, tm_wday=2, tm_yday=249, tm_isdst=0)

延遲線程調用

import timetime.sleep(2) # 延遲2秒