How to sort a list of x-y coordinates

by

use sorted with key:

>>> my_list = [[1,2],[0,2],[2,1],[1,1],[2,2],[2,0],[0,1],[1,0],[0,0]]
>>> sorted(my_list , key=lambda k: [k[1], k[0]])
[[0, 0], [1, 0], [2, 0], [0, 1], [1, 1], [2, 1], [0, 2], [1, 2], [2, 2]]

It will first sort on the y value and if that’s equal then it will sort on the x value.

I would also advise to not use list as a variable because it is a built-in data structure.

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