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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#datetimeimport 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 datetimetime_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 - dayprint('{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 = 4now = datetime.datetime.now()my_date = datetime.timedelta(days=n_days) n_day = now + my_dateprint('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 win32Type "copyright", "credits" or "license()" for more information.>>> ================================ RESTART ================================>>> 2013-07-29 01:48:162013-07-292013-07-29 01:05:002013-07-29 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。
