Question

从我收集的内容here（例如），这应该以两位数打印当前年份

print (datetime.strftime("%y"))

但是，我收到此错误

TypeError: descriptor 'strftime' requires a 'datetime.date' object but received a 'str'

所以我尝试了这个

print (datetime.strftime(datetime.date()))

获取

TypeError: descriptor 'date' of 'datetime.datetime' object needs an argument

所以我将"%y"放在thr date()上面以获取

TypeError: descriptor 'date' requires a 'datetime.datetime' object but received a 'str'

开始对我来说似乎真的很邋and和腥。

我错过了什么？

Answer 1

import datetime
now = datetime.datetime.now()

print(now.year)

上面的代码对我来说非常好。

Answer 2

以下似乎有效：

import datetime
print (datetime.datetime.now().strftime("%y"))

它想要的datetime.data对象位于点的“左侧”而不是右侧。你需要一个datetime实例来调用方法，你现在可以通过它来实现（）

Answer 3

此代码将允许您以任何格式获取您可以想到的日期和时间:(查看此帖的底部以获取更多信息）

# Get The Current Date Or Time
def getdatetime(timedateformat='complete'):
    from datetime import datetime
    timedateformat = timedateformat.lower()
    if timedateformat == 'day':
        return ((str(datetime.now())).split(' ')[0]).split('-')[2]
    elif timedateformat == 'month':
        return ((str(datetime.now())).split(' ')[0]).split('-')[1]
    elif timedateformat == 'year':
        return ((str(datetime.now())).split(' ')[0]).split('-')[0]
    elif timedateformat == 'hour':
        return (((str(datetime.now())).split(' ')[1]).split('.')[0]).split(':')[0]
    elif timedateformat == 'minute':
        return (((str(datetime.now())).split(' ')[1]).split('.')[0]).split(':')[1]
    elif timedateformat == 'second':
        return (((str(datetime.now())).split(' ')[1]).split('.')[0]).split(':')[2]
    elif timedateformat == 'millisecond':
        return (str(datetime.now())).split('.')[1]
    elif timedateformat == 'yearmonthday':
        return (str(datetime.now())).split(' ')[0]
    elif timedateformat == 'daymonthyear':
        return ((str(datetime.now())).split(' ')[0]).split('-')[2] + '-' + ((str(datetime.now())).split(' ')[0]).split('-')[1] + '-' + ((str(datetime.now())).split(' ')[0]).split('-')[0]
    elif timedateformat == 'hourminutesecond':
        return ((str(datetime.now())).split(' ')[1]).split('.')[0]
    elif timedateformat == 'secondminutehour':
        return (((str(datetime.now())).split(' ')[1]).split('.')[0]).split(':')[2] + ':' + (((str(datetime.now())).split(' ')[1]).split('.')[0]).split(':')[1] + ':' + (((str(datetime.now())).split(' ')[1]).split('.')[0]).split(':')[0]
    elif timedateformat == 'complete':
        return str(datetime.now())
    elif timedateformat == 'datetime':
        return (str(datetime.now())).split('.')[0]
    elif timedateformat == 'timedate':
        return ((str(datetime.now())).split('.')[0]).split(' ')[1] + ' ' + ((str(datetime.now())).split('.')[0]).split(' ')[0]

要获取时间或日期，只需输入getdatetime('TYPE')并将TYPE替换为以下任何（请记住：确保当您输入它时，请将其包围语音标记（“）或Apostraphies（'））

基于相同时间和日期的所有示例输出：

日期：25-11-2017 |时间：03：23：56.477017

Answer 4

我总是使用这个代码，它将年份打印成元组中的第二个

data have;
/* infile datalines dlm=',' dsd;  */
length Obs 8.    MEMNUM  $22.     ADM  $9.  LINE $1.   FROM   8.     TO   8.    FROM_NEW 8.    TO_NEW  8.   TOS $6. order  8. ;
format FROM   date9.     TO   date9.    FROM_NEW  date9.    TO_NEW  date9. ;
informat FROM   date9.     TO   date9.    FROM_NEW  date9.    TO_NEW  date9. ;
input 
Obs     MEMNUM  $     ADM  $  LINE $   FROM      TO     FROM_NEW   TO_NEW   TOS $ order ;
datalines; 
1  9840964190000001 237696870 X 23OCT2016 23NOV2016 23OCT2016 30OCT2016 FAC_IP 1 
2  9840964190000001 237696870 R 23OCT2016 23NOV2016 .         23NOV2016 FAC_IP 2 
3  9840964190000001 237696870 X 23OCT2016 23NOV2016 02NOV2016 03NOV2016 FAC_IP 3 
4  9840964190000001 237696870 X 23OCT2016 23NOV2016 05NOV2016 09NOV2016 FAC_IP 4 
5  9840964190000001 237696870 X 23OCT2016 23NOV2016 11NOV2016 14NOV2016 FAC_IP 5 
6  9840964190000001 237696870 .  23OCT2016 23NOV2016 25OCT2016 25OCT2016 PRO_IP . 
7  9840964190000001 237696870 .  23OCT2016 23NOV2016 26OCT2016 26OCT2016 PRO_IP . 
8  9840964190000001 237696870 .  23OCT2016 23NOV2016 27OCT2016 27OCT2016 PRO_IP . 
9  9840964190000001 237696870 .  23OCT2016 23NOV2016 28OCT2016 28OCT2016 PRO_IP . 
10 9840964190000001 237696870 .  23OCT2016 23NOV2016 29OCT2016 29OCT2016 PRO_IP . 
11 9840964190000001 237696870 .  23OCT2016 23NOV2016 30OCT2016 30OCT2016 PRO_IP . 
12 9840964190000001 237696870 .  23OCT2016 23NOV2016 02NOV2016 02NOV2016 PRO_IP . 
13 9840964190000001 237696870 .  23OCT2016 23NOV2016 03NOV2016 03NOV2016 PRO_IP . 
14 9840964190000001 237696870 . 23OCT2016 23NOV2016 06NOV2016 06NOV2016 PRO_IP . 
15 9840964190000001 237696870 .  23OCT2016 23NOV2016 07NOV2016 07NOV2016 PRO_IP . 
16 9840964190000001 237696870 .  23OCT2016 23NOV2016 08NOV2016 08NOV2016 PRO_IP . 
17 9840964190000001 237696870 .  23OCT2016 23NOV2016 11NOV2016 11NOV2016 PRO_IP . 
18 9840964190000001 237696870 .  23OCT2016 23NOV2016 12NOV2016 12NOV2016 PRO_IP . 
19 9840964190000001 237696870 .  23OCT2016 23NOV2016 13NOV2016 13NOV2016 PRO_IP . 
20 9840964190000001 237696870 .  23OCT2016 23NOV2016 14NOV2016 14NOV2016 PRO_IP . 
21 9840964190000001 237696870 .  23OCT2016 23NOV2016 20NOV2016 20NOV2016 PRO_IP . 
22 9840964190000001 237696870 .  23OCT2016 23NOV2016 21NOV2016 21NOV2016 PRO_IP . 
23 9840964190000001 237696870 .  23OCT2016 23NOV2016 22NOV2016 22NOV2016 PRO_IP . 
24 9840964190000001 237696870 .  23OCT2016 23NOV2016 23NOV2016 23NOV2016 PRO_IP . 
25 9840964190000001 244243815 R 04DEC2016 17DEC2016 04DEC2016 .         FAC_IP 1 
26 9840964190000001 244243815 X 04DEC2016 17DEC2016 14DEC2016 17DEC2016 FAC_IP 2 
27 9840964190000001 244243815 .  04DEC2016 17DEC2016 04DEC2016 04DEC2016 PRO_IP . 
28 9840964190000001 244243815 .  04DEC2016 17DEC2016 05DEC2016 05DEC2016 PRO_IP . 
29 9840964190000001 244243815 .  04DEC2016 17DEC2016 06DEC2016 06DEC2016 PRO_IP . 
30 9840964190000001 244243815 .  04DEC2016 17DEC2016 07DEC2016 07DEC2016 PRO_IP . 
31 9840964190000001 244243815 .  04DEC2016 17DEC2016 08DEC2016 08DEC2016 PRO_IP . 
32 9840964190000001 244243815 .  04DEC2016 17DEC2016 14DEC2016 14DEC2016 PRO_IP . 
33 9840964190000001 244243815 .  04DEC2016 17DEC2016 15DEC2016 15DEC2016 PRO_IP . 
34 9840964190000001 244243815 .  04DEC2016 17DEC2016 16DEC2016 16DEC2016 PRO_IP . 
35 9840964190000001 244243815 .  04DEC2016 17DEC2016 17DEC2016 17DEC2016 PRO_IP . 
;
run;
proc sql; 
create table  missing_dates as
select MEMNUM , ADM , FROM_NEW , TO_NEW , MAX_FROM_NEW , Max_TO_NEW ,
max(FNL)  as FNL format=date9., min(TNL) as TNL format=date9. 
from (
    select t1.*, t2.Max_Order, t3.FROM_NEW as MAX_FROM_NEW , t3.TO_NEW as Max_TO_NEW ,
    t4.FROM_NEW as FNL, t4.TO_NEW as TNL
    from 
/*  Identify Missing dates*/
    (select * from have where FROM_NEW = . or TO_NEW=.) as t1
    left join 
/*  Identify Max order */
    (select MEMNUM, ADM, max(order)  as Max_Order 
    from have where TOS='FAC_IP' group by MEMNUM, ADM ) as t2 on t1.MEMNUM=t2.MEMNUM and t1.ADM = t2.ADM
/*  Join Max Order with the rest of the Data */
    inner join have as t3 on t3.TOS='FAC_IP' and t3.MEMNUM=t2.MEMNUM and t3.ADM = t2.ADM and t3.order=t2.Max_Order
/*  Join Max Order with PRO_IP */
    left join
    (select  MEMNUM, ADM, FROM_NEW , TO_NEW from have where TOS='PRO_IP' group by MEMNUM, ADM ) as t4 on t1.MEMNUM=t4.MEMNUM and t1.ADM = t4.ADM
) as want 
where case when (FROM_NEW=. and TNL> Max_TO_NEW) then 1
when (TO_NEW=. and FNL  < MAX_FROM_NEW) then 1
else 0
end
group by MEMNUM , ADM , FROM_NEW , TO_NEW , MAX_FROM_NEW , Max_TO_NEW  
; 
quit;

proc sql;
 create table update_mising as select 
A.Obs, A.MEMNUM, A.ADM  , A.LINE ,A.FROM , A.TO   , 
coalesce(A.FROM_NEW,B.TNL) as FROM_NEW format=date9.  , 
coalesce(A.TO_NEW,B.TNL) as TO_NEW format=date9. ,
 A.TOS , A.order 
from have  A left join missing_dates B
on (A.FROM_NEW = . or A.TO_NEW=.) and A.MEMNUM=B.MEMNUM and A.ADM = B.ADM
order by A.OBS
;
quit;

Answer 5

我每次都使用这个标准的

import datetime
now = datetime.datetime.now()
print ("Current date and time : ")
print (now.strftime("%Y-%m-%d %H:%M:%S"))

Answer 6

请尝试以下几行以获取当前日期。

import datetime

now = datetime.datetime.now()

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

Output:
2020-02-26 21:15:32

引用：https://beginnersbug.com/how-to-get-the-current-date-in-pyspark-with-example/

如何在python3上打印当前日期？

6 个答案:

此代码将允许您以任何格式获取您可以想到的日期和时间:(查看此帖的底部以获取更多信息）