排除“描述符'日期'需要'datetime.datetime'对象，但收到'int'”

Question

In my code I ask the user for a date in the format dd/mm/yyyy .

currentdate = raw_input("Please enter todays date in the format dd/mm/yyyy: ")
day,month,year = currentdate.split('/')
today = datetime.date(int(year),int(month),int(day))

This returns the error

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

if I remove the int() then I end up with the same error only it says it received a 'str'

What am I doing wrong?

Answer 1

It seems that you have imported datetime.datetime module instead of datetime . This should work though:

import datetime
currentdate = raw_input("Please enter todays date in the format dd/mm/yyyy: ")
day,month,year = currentdate.split('/')
today = datetime.date(int(year),int(month),int(day))

..or this:

from datetime import date
currentdate = raw_input("Please enter todays date in the format dd/mm/yyyy: ")
day,month,year = currentdate.split('/')
today = date(int(year),int(month),int(day))

Answer 2

Do you import like this?

from datetime import datetime

Then you must change it to look like this:

import datetime

Explanation: In the first case you are effectively calling datetime.datetime.date() , a method on the object datetime in the module datetime . In the later case you create a new date() object with the constructor datetime.date() .

Alternatively, you can change the import to:

from datetime import datetime, date

and then construct with date(y,m,d) (without the datetime. prefix).

Answer 3

if you already have

from datetime import datetime

then you can construct like so:

christmas = datetime(2013,12,25)

Answer 4

I can reproduce the error if I do

from datetime import *

It goes away when I do

import datetime

So check your imports.

Answer 5

You can use both datetime and datetime.datetime. Write the imports like this:

from datetime import datetime
import datetime as dt

time_1 = datetime.strptime('17:00:00', '%H:%M:%S')
time_1 = dt.time(time_1.hour, time_1.minute,  time_1.second)

Answer 6

I suspect that the datetime reference the object and not the module. You probably did have the following code (probably more complex):

from datetime import datetime
currentdate = raw_input("Please enter todays date in the format dd/mm/yyyy: ")
day,month,year = currentdate.split('/')
today = datetime.date(int(year),int(month),int(day))

You are thus calling the date method of the datetime class instead of calling the date function of the datetime module.

You can print the datetime object to see if this is really the case:

>>> import datetime
>>> print datetime
<module 'datetime' (built-in)>
>>> print datetime.date(1, 1, 1)
0001-01-01
>>> datetime = datetime.datetime
>>> print datetime
<type 'datetime.datetime'>
>>> print datetime.date(1, 1, 1)

Traceback (most recent call last):
  File "<pyshell#12>", line 1, in <module>
    print datetime.date(1, 1, 1)
TypeError: descriptor 'date' requires a 'datetime.datetime' object but received a 'int'