CODEWITHSUNDEEP
pythonlistpython-3.8sublist
Dino
Dino

Reputation: 19

How to extract a specific sub-element in a list of lists?

I have this list:

victories = [[0, 7], [1, 2], [2, 3], [3, 6], [4, 7]]

I have to return all the first sub-elements, so 0, 1, 2, 3, 4

BUT

I need to sort the list according whom has the higher second sub-element, thus 7, 7, 6, 3, 2

If a first sub-element has the same second sub-element of another first sub-element, then who is lower is ranked before.

so the final list must be:

[0, 4, 3, 2, 1]

How can I do that?

Upvotes: 0

Views: 378

Answers (1)

mad_
mad_

Reputation: 8273

You can try this one out using sorted and sort on second element first and then first like below

victories = [[0, 7], [1, 2], [2, 3], [3, 6], [4, 7]]
[i[0] for i in sorted(victories,key=lambda x : (-x[1],x[0]))]

Upvotes: 1

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