“““
file:?Sudoku.py
author:?Michael?Washburn?Jr?nk.net>
description:?A?self?generating?Sudoku?game?using
a?tkinter?based?GUI.
“““
from?copy?import?deepcopy
from?random?import?randrange?shuffle
from?tkinter?import?*

def?init（）:
????“““
????initializes?the?random?sudoku?board.
????Returns:?board?-?A?2D?array?representation?of?the?sudoku?board
?????????????key?-?a?solved?board
????“““
????board?=?[None]?*?9
????for?n?in?range（0len（board））:
????????board[n]?=?[None]?*?9
????board?=?randomize（board）
????board?=?solve（board）
????key?=?deepcopy（board）
????board?=?removeSpots（board）
????return?board?key

def?solutions（board）:
????“““
????finds?out?all?possible?solutions?to?a?board?configuration.
????-?used?to?see?if?a?board?is?valid
????Returns:?sol