The Game never ends! Please Help!

Question

from random import randint as rnd
from time import sleep
stop=2
b=[[None,None,None],[None,None,None],[None,None,None]]
def printBoard(board):
for x in range(0,len(board)):
r=''
for y in range(0,len(board[x])):
if board[x][y] == 1:
r += ' X '
elif board[x][y] == 0:
r += ' O '
else:
r+= ' - '
print(r)

def win(board):
for x in range(len(board)):
if board[x][0] == board[x][1] and board[x][1] == board[x][2]:
if board[x][0] == 1:
print("Computer Wins")
stop=1
elif board[x][0] == 0:
print("Player Wins")
stop=1
for y in range(len(board[0])):
if board[0][y] == board[1][y] and board[1][y] == board[2][y]:
if board[0][y] == 1:
print("Computer Wins")
stop=1
elif board[0][y] == 0:
print("Player Wins")
stop=1
if board[0][0] == board[1][1] and board[1][1] == board[2][2]:
if board[0][0] == 1:
print("Computer Wins")
stop=1
elif board[0][0] == 0:
print("Player Wins")
stop=1
if board[0][2] == board[1][1] and board[1][1] == board[2][0]:
if board[0][2] == 1:
print("Computer Wins")
stop=1
elif board[0][2] == 0:
print("Player Wins")
stop=1

def putrnd(board):
x=rnd(0,len(board)-1)
y=rnd(0,len(board[0])-1)
if board[x][y] == None:
board[x][y]=1
else:
putrnd(board)

while stop==2:
print("This your beautiful Tic Tac Toe board:")
printBoard(b)
print("Now, where do you want your O to be?")
xc=int(input("Enter the x-coord: "))
yc=int(input("Enter the y-coord: "))
if b[xc][yc] == None:
b[xc][yc] = 0
print("Hmm....\nNice try bro\nLet me think where to put my X.....")
sleep(rnd(0,3))
else:
print(". .\n | \n _ \nSorry the place is already filled, you lose a chance")
putrnd(b)
win(b)

Answer 1

Hmm... are you sure your methods are updating the *global* stop variable? ;)

Answer 2

Just add:
global stop
to each method's definition, to be sure.

Answer 3

Hmm.....
I see what you are pointing out to....
Is there any other way?