3

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'

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  • 1
    try : pd.Series(numbers).sort_values() Commented Jul 26, 2019 at 12:34
  • Possible duplicate of Sort a list in python Commented Jul 26, 2019 at 12:35

3 Answers 3

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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)
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1 Comment

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 "<stdin>", line 1, in <module> AttributeError: 'list' object has no attribute 'sort_values' >>>
4

Use sorted():

lst = [1, 2, 3, 4]
new_lst = sorted(lst, reverse=True)
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thanks, that however only prints out the lst in the order required and doesn't store it as required
1

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

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