我如何将日期转换为日/月/年（20/Jan/2012）在python中

Question

我有一段脚本已经写好，我需要更改日期，当脚本运行时它输出此消息

output_messaging("*** DATA REFRESH FOR STREETWORKS DATA EXECUTED ON " + 
    str(datetime.date.today().day) + "/" + str(datetime.date.today().month) + "/" +    
    str(datetime.date.today().year) + " AT " + str(datetime.datetime.now().hour) + ':' + 
    str(datetime.datetime.now().minute) + ':' + str(datetime.datetime.now().second) + " ***\n\n") 

其中给出

*** DATA REFRESH FOR STREETWORKS DATA EXECUTED ON 20/2/2012 AT 18:3 *** 

我需要转换为

20/Feb/2012日期，我该怎么做呢？

Answer 1

使用strftime本 - 这是不是做了一堆定制级联的方式更容易。有一个表格格式约定here。

>>> s = "*** DATA REFRESH FOR STREETWORKS DATA EXECUTED ON "\ 
...  "%d/%b/%y AT %H:%M:%S ***\n\n" 
>>> datetime.datetime.now().strftime(s) 
'*** DATA REFRESH FOR STREETWORKS DATA EXECUTED ON 28/Feb/12 AT 11:44:03 ***\n\n' 

由于eumiro的回答表明，你也可以稍微修改格式字符串反转上面的调用就像这样：

>>> s = "*** DATA REFRESH FOR STREETWORKS DATA EXECUTED ON "\ 
...  "{0:%d/%b/%y} AT {0:%H:%M:%S} ***\n\n" 
>>> s.format(datetime.datetime.now()) 
'*** DATA REFRESH FOR STREETWORKS DATA EXECUTED ON 28/Feb/12 AT 13:41:10 ***\n\n' 

这工作，因为format只是调用（令人震惊的下记录） __format__方法datetime.datetime对象。例如：

>>> datetime.datetime.now().__format__('The current month is %B') 
'The current month is February' 

这适用于其他类型太：

>>> (16).__format__('x') 
'10' 

更多关于__format__，请参阅日期格式PEP 3101

Answer 2

import datetime 
print datetime.datetime.now().strftime('%d/%b/%Y') 
# 28/Feb/2012 

Answer 3

output_messaging("*** DATA REFRESH FOR STREETWORKS DATA EXECUTED ON {0:%d/%b/%Y} AT {0:%H:%M} ***".format(datetime.datetime.now())) 

打印

*** DATA REFRESH FOR STREETWORKS DATA EXECUTED ON 28/Feb/2012 AT 17:41 *** 

More information about datetime formatting

Answer 4

>>> from datetime import date 
>>> day = date.today() 
>>> day.strftime('%d/%b/%y') 
'28/Feb/12'