listen error

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#Turtle Graphics Game
import turtle

#Set up Screen
wn = turtle.Screen()
wn.bgcolor("lightgreen")

#create player turtle
player = turtle.Turtle()
player.color("blue")
player.shape("triangle")
player.penup()
#set speed variable
speed = 1

#define functions

def turnleft():
  player.left(30)

def turnright():
  player.right(30)

#set keyboard bindings

turtle.listen()
turtle.onkey(turnleft, "left")
turtle.onkey(turnright, "right")


while True:
  player.forward(speed)













delay = raw_input("Press Enter to Finish. ")

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