Sudoku Generator

Question

So, I just created a Sudoku generator that will create 9x9 matrices. My rows, columns and sub 3x3 matrices must comply with sudoku rules. Only my columns are not compliant. Can anyone help? Here is my code:

import random maxAttempts = 100 #stops the program after 100 attempts count = 9999 solCount = 0 while count > maxAttempts: solCount +=1 # init array puzzle = [] for i in range(9): row = [] for j in range(9): row.append(0) #print row puzzle.append(row) ##for r in puzzle: ## print r # get random value for row in range(9): for col in range(9): thisRow=puzzle[row] thisCol=[] for h in range(9): thisCol.append(puzzle[row][col]) subCol = int(col/3) subRow = int(row/3) subMat = [] for subR in range (3): for subC in range (3): subMat.append(puzzle[subRow*3 + subR][subCol*3 + subC]) randVal = 0 count = 0 while randVal in thisRow or randVal in thisCol or randVal in subMat: randVal = random.randint(1,9) count+=1 if count > maxAttempts: break puzzle[row][col] = randVal if count > maxAttempts: break if count > maxAttempts: break for r in puzzle: print r 

Answer 1

 for h in range(9): thisCol.append(puzzle[h][col]) 

Just replace [row] with [h] and everything will be fine.