Python: how to print out a 2d list that is formatted into a grid?

Question

Currently, I have made this code

def grid_maker(h,w):
    grid = [[[\"-\"] for i in range(w)] for i in range(h)]
    grid[0][0] = [\"o\"]
    print grid

>         


        

Answer 1

If you want to use the result of grid_maker(), you have to return its result, using return:

def grid_maker(h, w):
    grid = [["-" for i in range(w)] for i in range(h)]
    grid[0][0] = "o"
    return grid

I modified it, because I don't think that each element must be inside another list.

To print the "grid", you could iterate through each row and then iterate through each element:

def print_grid(grid):
    for row in grid:
        for e in row:
            print e,
        print

Output:

print_grid(grid_maker(3, 5))

o - - - -
- - - - -
- - - - -