CODEWITHSUNDEEP
python
Nazia
Nazia

Reputation: 15

list' object has no attribute 'date'

I am new to python and was trying to sort the dates in a list. Below is the code that I wrote and getting
following error on the below line

#### date_object = datetime_object.date() ## list' object has no attribute 'date'

from datetime import datetime,date
lst_dates = ['01 Apr 2017', '01 Apr 2018', '01 Aug 2017', '01 Aug 2018', '01 Dec 2017', '01 Dec 2018', '01 Feb 2017', '01 Feb 2018', '01 Jan 2017', '01 Jan 2018']
datetime_object = sorted(lst_dates, key=lambda x: datetime.strptime(x, '%d %b %Y'))
date_object = datetime_object.date()
print(date_object)

Please assist in helping me understand what the issues is. Thanks

Upvotes: 0

Views: 1784

Answers (4)

lenik
lenik

Reputation: 23556

This works just fine:

from datetime import datetime,date
lst_dates = ['01 Apr 2017', '01 Apr 2018', '01 Aug 2017', '01 Aug 2018', '01 Dec 2017', '01 Dec 2018', '01 Feb 2017', '01 Feb 2018', '01 Jan 2017', '01 Jan 2018']
datetime_object = sorted(lst_dates, key=lambda x: datetime.strptime(x, '%d %b %Y'))
#date_object = datetime_object.date()  # <<-- remove this line
print(datetime_object)

testing:

>>> from datetime import datetime,date
>>> lst_dates = ['01 Apr 2017', '01 Apr 2018', '01 Aug 2017', '01 Aug 2018', '01 Dec 2017', '01 Dec 2018', '01 Feb 2017', '01 Feb 2018', '01 Jan 2017', '01 Jan 2018']
>>> datetime_object = sorted(lst_dates, key=lambda x: datetime.strptime(x, '%d %b %Y'))
>>> print(datetime_object)
['01 Jan 2017', '01 Feb 2017', '01 Apr 2017', '01 Aug 2017', '01 Dec 2017', '01 Jan 2018', '01 Feb 2018', '01 Apr 2018', '01 Aug 2018', '01 Dec 2018']
>>>

Upvotes: 0

targhs
targhs

Reputation: 1805

The problem with you code is on line #3 when you are writing

datetime_object = sorted(lst_dates, key=lambda x: datetime.strptime(x, '%d %b %Y'))

sorted function in Python returns a new python list object. If you want to check then run

type(datetime_object)

So in order to achieve what you want here you need to iterate over that list. Your final code would be something like this

from datetime import datetime,date
lst_dates = ['01 Apr 2017', '01 Apr 2018', '01 Aug 2017', '01 Aug 2018', '01 Dec 2017', '01 Dec 2018', '01 Feb 2017', '01 Feb 2018', '01 Jan 2017', '01 Jan 2018']
datetime_obj_list = sorted(lst_dates, key=lambda x: datetime.strptime(x, '%d %b %Y'))

for datetime_object in datetime_obj_list:
    datetime_object = datetime.strptime(datetime_object, "%d %b %Y")
    print(datetime_object.date())

UPDATE: Here's a working sample of the code https://ideone.com/YRDQR7

Upvotes: 1

Mohit Bisht
Mohit Bisht

Reputation: 17

the problem is on 4th line

it should be date_object = datetime.date()

Upvotes: 0

Thulasiram Bandaru
Thulasiram Bandaru

Reputation: 101

Python don't have the list.date() function, with below code list of dates can be sorted.

from datetime import datetime
lst_dates = ['01 Apr 2017', '01 Apr 2018', '01 Aug 2017', '01 Aug 2018', '01 Dec 2017', '01 Dec 2018', '01 Feb 2017', '01 Feb 2018', '01 Jan 2017', '01 Jan 2018']
lst_dates.sort(key=lambda date: datetime.strptime(date, "%d %b %Y"))
print(lst_dates)

Upvotes: 2

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