The main function drives the entire program. It uses a while (leftIsClear()) loop to ensure that as long as there is a row above to move to, Karel keeps working. The final fillRow() ensures the last row is filled. fillRow() Function This is the core logic. Karel starts by placing a beeper.
if (frontIsClear()) move(); col++; else break;
for i in range(8): # Only modify the top 3 and bottom 3 rows if i < 3 or i > 4: for j in range(8): # If the sum of indices is even, set to 1 if (i + j) % 2 == 0: board[i][j] = 1 Use code with caution. Copied to clipboard 3. Print the Result 9.1.6 checkerboard v1 codehs
If you want to customize your checkerboard or are running into specific error messages, let me know:
: Use the provided print_board(board) function to display your final 2D list. Example Code Breakdown Here is a clean way to implement this logic: The main function drives the entire program
Use the modulus operator (%) to create the "every other" effect. A reliable trick is checking if (i + j) % 2 == 0 .
The most critical part of the assignment is making sure adjacent squares do not share the same color. We achieve this using the , which returns the remainder of a division. fillRow() Function This is the core logic
The biggest mistake is making every row look the same. Ensure your repositionToNextRow function actually changes the starting position of the next row.
To solve this, you need to understand two fundamental concepts:
for row in board: print(" ".join(row))
Defining NUM_ROWS and NUM_COLS at the top of your script is a programming best practice. If you later want to change your checkerboard into a