python编程开发之日期操作实例分析

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:

time.strftime

datetime

下面是我做的demo:

#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:

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。