Recieving error when deleting data from within a list!
Hello, I am attempting to create sudoku within pythonista, and within the following code I am trying to create the 9x9 space, and place numbers in each square. When I run this, I get the error that whatever x is equal to within the for loop, is not inside of the column in which it has been placed. When I tried to troubleshoot this, I narrowed the issue down to the delete, or del, command used within my code. If I replaced that with a print statement, the code works fine, even though delete has nothing to do with testing to see if x is within its column. My code is below, please help if you can.
import random board = [,,,,,,,,] for column in range(9): run = True while run: x = random.randint(1,9) if x not in board[column]: board[column].append(x) for y in range(9): if y != column: r = board[column].index(x) if x in board[y]: if r == board[y].index(x): del board[column][r] if len(board[column]) == 9: run = False print(board)