本文实例讲述了python编程开发之日期操作。分享给大家供大家参考,具体如下:
在python中对日期进行操作的库有:
import datetime
import time
对日期格式化信息,可以参考官方API:
下面是我做的demo:
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#datetime import datetime #当前日期 now = datetime.datetime.now() print (now.strftime( '%Y-%m-%d %H:%M:%S' )) print (now.strftime( '%Y-%m-%d' )) #string convert to datetime time_str = '2013-07-29 01:05:00' str_convert_2_time = datetime.datetime.strptime(time_str, '%Y-%m-%d %H:%M:%S' ) print (str_convert_2_time) #比较两个日期相差多少天 time_strA = '2013-07-29 01:05:00' time_strB = '2013-08-29 01:05:00' day = datetime.datetime.strptime(time_strA, '%Y-%m-%d %H:%M:%S' ) day2 = datetime.datetime.strptime(time_strB, '%Y-%m-%d %H:%M:%S' ) sub_day = day2 - day print ( '{0}和{1}相差{2}天' . format (time_strA, time_strB, str (sub_day.days))) #今后的n天的日期 n_days = 4 now = datetime.datetime.now() my_date = datetime.timedelta(days = n_days) n_day = now + my_date print ( '从今天起的{0}天的日期是:' . format (n_days)) print (n_day.strftime( '%Y-%m-%d %H:%M:%S' )) |
运行效果:
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Python 3.3 . 2 (v3. 3.2 :d047928ae3f6, May 16 2013 , 00 : 03 : 43 ) [MSC v. 1600 32 bit (Intel)] on win32 Type "copyright" , "credits" or "license()" for more information. >>> = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = RESTART = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = >>> 2013 - 07 - 29 01 : 48 : 16 2013 - 07 - 29 2013 - 07 - 29 01 : 05 : 00 2013 - 07 - 29 01 : 05 : 00 和 2013 - 08 - 29 01 : 05 : 00 相差 31 天 从今天起的 4 天的日期是: 2013 - 08 - 02 01 : 48 : 16 >>> |
希望本文所述对大家Python程序设计有所帮助。