AttributeError: 'list' object has no attribute 'sort_values'

Question

At work we recently upgraded to pandas 0.20 and I have a list of numbers that I sort using sort (however this is no longer supported and I am getting the above message when I try sort_values).

numbers = [1, 3, 4, 2] 
numbers.sort(reverse = True) 
print numbers

[4, 3, 2, 1]

numbers.sort_values(reverse = True)

I'm getting this error :

Traceback (most recent call last):

File "", line 1, in

AttributeError: 'list' object has no attribute 'sort_values'

Possible duplicate of [Sort a list in python](https://stackoverflow.com/questions/19199984/sort-a-list-in-python) — basilisk, Jul 26 '19 at 12:35

score 5 · Answer 1 · answered Jul 26 '19 at 12:34

5

You don't appear to be using pandas at all here; numbers is a standard Python list. And the method to sort a list is just called sort.

numbers.sort(reverse=True)

answered Jul 26 '19 at 12:34

Daniel Roseman

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cheers, I'm still a novice at this and I used this example without understanding numbers was a standard python list. so I guess if I called the list of number "list" and reran it then I get the same error >>> lst = [1, 3, 4, 2] >>> lst.sort_values(reverse = True) Traceback (most recent call last): File "", line 1, in AttributeError: 'list' object has no attribute 'sort_values' >>> – funnyname Jul 26 '19 at 12:45

Carsten · Answer 2 · 2020-07-09T06:53:07.267

4

Use sorted():

lst = [1, 2, 3, 4]
new_lst = sorted(lst, reverse=True)

edited Jul 09 '20 at 06:53

answered Jul 26 '19 at 12:32

Carsten

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thanks, that however only prints out the lst in the order required and doesn't store it as required – funnyname Jul 26 '19 at 12:48

score 0 · Answer 3 · answered Jul 26 '19 at 15:44

0

I ended up using sort() rather than sort(reverse = True) and it worked as I wanted, thanks for the help, I really appreciate it.

answered Jul 26 '19 at 15:44

funnyname

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AttributeError: 'list' object has no attribute 'sort_values'

3 Answers3

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