Pythonic way to get adjacent elements in a matrix

Question

Given a matrix / multidimensional list, I wanted to get the adjacent elements of each element horizontally, vertically, and diagonally. My initial thought process involved creating seperate logic for elements at the edges of the matrix and another one for the ones in the middle but it seems long and unreliable. What is the most pythonic algorithm that can be implemented for this task?

Answer 1

I wouldn't say that I know for sure what would be THE most pythonic way to solve this, but I put three examples together that I would consider rather pythonic. They are plain python for the most part while using itertools product in one place.
I guess there would be some good methods for this using pandas, as well, but I didn't go into that here.

https://code.sololearn.com/c30LcCE11P2Y/?ref=app