如何以常规格式打印日期？

【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>>

这是我的代码：

import datetime
today = datetime.date.today()
print today

打印： 2008-11-22这正是我想要的。

但是，我有一个列表要附加到该列表中，然后突然所有内容都变得“异常”。这是代码：

import datetime
mylist = []
today = datetime.date.today()
mylist.append(today)
print mylist

打印以下内容：

[datetime.date(2008, 11, 22)]

我怎样才能得到像2008-11-22这样的简单约会？

#1楼

import datetime
print datetime.datetime.now().strftime("%Y-%m-%d %H:%M")

编辑：

在Cees建议之后，我也开始使用时间：

import time
print time.strftime("%Y-%m-%d %H:%M")

#2楼

date，datetime和time对象均支持strftime（format）方法，以在显式格式字符串的控制下创建表示时间的字符串。

这是格式代码及其指令和含义的列表。

    %a  Locale’s abbreviated weekday name.
    %A  Locale’s full weekday name.      
    %b  Locale’s abbreviated month name.     
    %B  Locale’s full month name.
    %c  Locale’s appropriate date and time representation.   
    %d  Day of the month as a decimal number [01,31].    
    %f  Microsecond as a decimal number [0,999999], zero-padded on the left
    %H  Hour (24-hour clock) as a decimal number [00,23].    
    %I  Hour (12-hour clock) as a decimal number [01,12].    
    %j  Day of the year as a decimal number [001,366].   
    %m  Month as a decimal number [01,12].   
    %M  Minute as a decimal number [00,59].      
    %p  Locale’s equivalent of either AM or PM.
    %S  Second as a decimal number [00,61].
    %U  Week number of the year (Sunday as the first day of the week)
    %w  Weekday as a decimal number [0(Sunday),6].   
    %W  Week number of the year (Monday as the first day of the week)
    %x  Locale’s appropriate date representation.    
    %X  Locale’s appropriate time representation.    
    %y  Year without century as a decimal number [00,99].    
    %Y  Year with century as a decimal number.   
    %z  UTC offset in the form +HHMM or -HHMM.
    %Z  Time zone name (empty string if the object is naive).    
    %%  A literal '%' character.

这就是我们可以使用Python中的datetime和time模块来做的事情

    import time
    import datetime

    print "Time in seconds since the epoch: %s" %time.time()
    print "Current date and time: " , datetime.datetime.now()
    print "Or like this: " ,datetime.datetime.now().strftime("%y-%m-%d-%H-%M")


    print "Current year: ", datetime.date.today().strftime("%Y")
    print "Month of year: ", datetime.date.today().strftime("%B")
    print "Week number of the year: ", datetime.date.today().strftime("%W")
    print "Weekday of the week: ", datetime.date.today().strftime("%w")
    print "Day of year: ", datetime.date.today().strftime("%j")
    print "Day of the month : ", datetime.date.today().strftime("%d")
    print "Day of week: ", datetime.date.today().strftime("%A")

这将打印出如下内容：

    Time in seconds since the epoch:    1349271346.46
    Current date and time:              2012-10-03 15:35:46.461491
    Or like this:                       12-10-03-15-35
    Current year:                       2012
    Month of year:                      October
    Week number of the year:            40
    Weekday of the week:                3
    Day of year:                        277
    Day of the month :                  03
    Day of week:                        Wednesday

#3楼

这更短：

>>> import time
>>> time.strftime("%Y-%m-%d %H:%M")
'2013-11-19 09:38'

#4楼

甚至

from datetime import datetime, date

"{:%d.%m.%Y}".format(datetime.now())

出：'25 .12.2013

要么

"{} - {:%d.%m.%Y}".format("Today", datetime.now())

离开：“今天-2013年12月25日”

"{:%A}".format(date.today())

出：“星期三”

'{}__{:%Y.%m.%d__%H-%M}.log'.format(__name__, datetime.now())

出：'__main ____ 2014.06.09__16-56.log'

#5楼

由于print today的print today返回了您想要的内容，因此这意味着今天的对象的__str__函数返回了您要查找的字符串。

因此，您也可以执行mylist.append(today.__str__()) 。

来源：oschina

链接：https://my.oschina.net/stackoom/blog/3150928

标签

time函数

strftime