: Instead of checking just the column index, we look at the sum of the row and col indices. If (row + col) % 2 == 0 , color the square red . Otherwise, color it black .
As you can see, checking if row + col is even perfectly recreates the checkerboard pattern. Step-by-Step Code Implementation
If you want to write this more concisely (though CodeHS might prefer the loop method for grading), you can use a : board = [[(i + j + 1) % 2 for j in range(8)] for i in range(8)] If you'd like, I can help you: Debug your specific error message Explain how to change the grid size dynamically 9.1.7 Checkerboard V2 Codehs
my_grid = [([0, 1] * 4) if row_num % 2 == 0 else ([1, 0] * 4) for row_num in range(8)]
What or failing test case is CodeHS showing? : Instead of checking just the column index,
Constructing a base 8x8 list grid populated strictly with 0 flat lines.
Create an empty list and use a loop to append 8 sub-lists, each containing eight zeros. As you can see, checking if row +
If your specific CodeHS framework requires you to append pre-arranged logic chains directly into the grid matrix container, you can check row parity using individual row-tracking loops.
: Pay close attention to whether the top-left cell [0][0] needs to be a 0 or a 1 . If your pattern is perfectly inverted, simply flip the logic inside your if-else statement.
checkerboard of obsidian and pearl tiles. However, Modulo was notoriously lazy and wanted a single set of instructions his apprentices could follow without him being there. 1. Designing the First Row
Start by defining your board dimensions and colors. This makes your code modular and easy to change later. GRID_SIZE : The total number of rows and columns.