I have a list, root, of lists, root[child0], root[child1], etc.

I want to sort the children of the root list by the first value in the child list, root[child0][0], which is an int.

Example:

import random
children = 10
root = [[random.randint(0, children), "some value"] for child in children]

I want to sort root from greatest to least by the first element of each of it's children.

I've taken a look at some previous entries that used sorted() and a lamda function I'm entirely unfamiliar with, so I'm unsure of how to apply that to my problem.

Appreciate any direction that can by given

Thanks