Problem with my pong game code

[kinggemini696]

You need to show the code. We can't see your screen.

import turtle

wn = turtle.Screen()
wn.title ("pong by king gemini")
wn.bgcolor("black")
wn.setup(width=800, height=600)



#Paddle A
paddle_a = turtle.Turtle()
paddle_a.speed(0)
paddle_a.shape("square")
paddle_a.color("white")
paddle_a.shapesize(stretch_wid=5, stretch_len=1)
paddle_a.penup()
paddle_a.goto(-350, 0)

#Paddle B
paddle_a = turtle.Turtle()
paddle_a.speed(0)
paddle_a.shape("square")
paddle_a.color("white")
paddle_a.shapesize(stretch_wid=5, stretch_len=1)
paddle_a.penup()
paddle_a.goto(+350, 0)

#Ball
ball = turtle.Turtle()
ball.speed(0)
ball.shape("circle")
ball.color("white")
ball.penup()
ball.goto(0,0)


#function
def paddle_a_up():
y = paddle_a.ycor()
y += 20
paddle_a.sety(y)

#keyboard binding

wn.listen()
wn.onkeypress(paddle_a_up,"q")




#main game loop
while True:
wn.update()
turtle.done