grid_system.py

def GridInit(grid_width, grid_height):
    grid = [[0 for x in range(grid_width)] for y in range(grid_height)]
    return grid

def Switch(grid, x, y):
    newState = 0

    if grid[x][y] == 0: newState = 1
    elif grid[x][y] == 1: newState = 0

    return newState

def IsGridEmpty(grid, grid_width, grid_height):

    empty = True

    for y in range(grid_height):
        for x in range(grid_width):
            if grid[x][y] == 1: empty = False
            
    return empty

def main():
    print("This is a library. It has:")
    print(" - GridInit(grid_width, grid_height): Returns a 2D list filled with 0.")
    print(" - Switch(grid_width, x, y): Retuns the inverted value of the cell.")


if __name__ == '__main__':
    main()