Sort list of lists in Py

Question

I'm working in a analysis project,

I have a list like this,

a = [ ["hi", 15], ["Hello", 20], ["Hey", 10] ]

I need to sort this list under the second element of the list,

Like this,

a = [ ["Hello", 20], ["hi", 15], ["Hey", 10] ]

The list need to be sorted under those numbers.

So far I tried,

a = sorted(a[1])

It didn't worked in the way I expected.

Give me a solution please.

Answer 1

a.sort(key=lambda x: int(x[1]))