Sorting a List of Lists

Question

I have this list of lists:

data = [['john','1','2', 2.45434], ['jack','1.3','2.2', 4.45434],
        ['josh','2','3', 3.45434]]

I want to sort it by the very last decimal number in each inner list. How can I do this?

In your case, the index is `-1` instead of `1`, but the concept is the same as the duplicate. — zondo, Aug 25 '16 at 00:31

score 1 · Answer 1 · answered Aug 25 '16 at 00:28

1

You can specify the key in the sorted function as the last element of the sub lists:

sorted(data, key = lambda x: x[-1])

# [['john', '1', '2', 2.45434],
#  ['josh', '2', '3', 3.45434],
#  ['jack', '1.3', '2.2', 4.45434]]

answered Aug 25 '16 at 00:28

Psidom

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score 0 · Answer 2 · answered Aug 25 '16 at 00:34

You may sort the existing "data" list by .sort() function of list using lambda function as:

data = [['john','1','2', 2.45434],['jack','1.3','2.2', 4.45434], ['josh','2','3', 3.45434]]
data.sort(key=lambda x: x[-1])
# data = [['john', '1', '2', 2.45434], ['josh', '2', '3', 3.45434], ['jack', '1.3', '2.2', 4.45434]]

Sorting a List of Lists

2 Answers2