Python - IndexError when Modifying a 2D List Inside a Loop with Nested Conditions
I'm learning this framework and I'm working on a personal project and I'm working with a 2D list in Python and trying to modify its values based on certain conditions... However, I'm working with an `IndexError: list index out of range` when attempting to update elements. Here’s the code snippet: ```python matrix = [[0, 1, 2], [3, 4, 5], [6, 7, 8]] for i in range(len(matrix)): for j in range(len(matrix[i])): if matrix[i][j] % 2 == 0: matrix[i][j] += 1 if i == 2 and j == 2: matrix[i][j + 1] = 10 # This line raises the IndexError ``` I expected the last element of the last list to be updated without issues, but it seems like I’m going out of bounds. I’ve tried checking the dimensions of the matrix and verified that it’s a 3x3 list, but I need to figure out why I'm getting this behavior. Is it because I'm trying to access an index that doesn't exist? I also attempted to catch the exception with a try-except block, but it still didn't clarify the root of the scenario. How can I safely modify elements in a 2D list without running into an `IndexError`? Any best practices for handling such cases would be greatly appreciated! For context: I'm using Python on macOS. Has anyone else encountered this? I'm using Python stable in this project. Thanks in advance!