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Hello, so I've been working on a simple Tic Tac Toe game using TKinter graphics GUI. However i keep getting this error, and i'm not sure why. Any help would be greatly appreciated.

Heres the code

```
import graphics
import random
def constructBoard():
win=graphics.GraphWin("Tic Tac Toe",500,500)
win.setCoords(0.0,0.0,3.0,3.0)
line1=graphics.Line(graphics.Point(1,0), graphics.Point(1,3)).draw(win)
line2=graphics.Line(graphics.Point(2,0), graphics.Point(2,3)).draw(win)
line3=graphics.Line(graphics.Point(0,1), graphics.Point(3,1)).draw(win)
line4=graphics.Line(graphics.Point(0,2), graphics.Point(3,2)).draw(win)
def player1Move(win):
mouseClick = win.getMouse()
x=mouseClick.getX()
y=mouesClick.getX()
radius = random.randint(5, 20)
topL = graphics.Point(x-radius, y-radius)
botR = graphics.Point(x+radius, y+radius)
player1X = graphics.Line(graphics.Point(topL, topL), graphics.Point(botR, botR))
player1X.draw(win)
def player2Move(win):
mouseClick = win.getMouse()
x = mouseClick.getX()
y = mouseClick.getX()
radius = random.randint(5,20)
topL = graphics.Point(x-radius, y-radius)
botR = graphics.Point(x+radius, y+radius)
player2Circle = graphics.Circle(topL, botR)
player2Circle.draw(win)
def main():
win = constructBoard()
player1Win = False
player2Win = False
while player1Win == False and player2Win == False:
player1Move(win)
player2Move(win)
```

Heres the error

```
Traceback (most recent call last):
File "<pyshell#4>", line 1, in <module>
main()
File "C:/Python25/TicTacToe.py", line 43, in main
player1Move(win)
File "C:/Python25/TicTacToe.py", line 17, in player1Move
mouseClick = win.getMouse()
AttributeError: 'NoneType' object has no attribute 'getMouse'
```

again any help would be greatly appreciated, thanks!