Moore Neighbourhood with Itertools clear solution for Moore Neighbourhood by arma - python coding challenges

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Moore Neighbourhood with Itertools solution in Clear category for Moore Neighbourhood by arma

from itertools import product

def count_neighbours(grid, row, col):
    """Summ values around the cell with (row, col) coordinates in grid"""
    summ = 0
    for x, y in product([row - 1, row, row + 1], [col - 1, col, col + 1]):
        if x < 0 or y < 0:
            continue
        if x == row and y == col:
            continue
        try:
            summ += grid[x][y]
        except IndexError:
            pass

    return summ

March 19, 2015

Comments:

pinto.faa on June 20, 2016, 8:49 a.m.
The except was really well used there

colinmcnicholl on June 8, 2021, 6:32 p.m.
A good use of itertools.product on line 6. Even if it does visit the cell with (row, col) coordinates in addition to the 8 around it. "Sum" has been mispelled as "Summ" in your doc comments on line 4.

mlahor on Dec. 23, 2021, 2:30 p.m.
A smart solution using try..except instead of bound checking :)

viktor.chyrkin on Nov. 24, 2023, 1:28 p.m.
Very nice, but I prefer instead of doing x<0 and y<0, 0>x and 0>y but that's just a preference.

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