pong paddles wont move

[skullkat232]

help pls! i am having trouble with the pong paddles and there are no visible errors in my code, pLeASe hELPA mE :((((

Here's my code:

import turtle

wn = turtle.Screen()
wn.title("pong py project")
wn.bgcolor("yellow")
wn.setup(width=800, height=600)
#wn.tracer(0)

# Paddle A
paddle_a = turtle.Turtle()
paddle_a.speed(3)
paddle_a.shape("square")
paddle_a.shapesize(stretch_wid=5, stretch_len=1)
paddle_a.color('white')
paddle_a.penup()
paddle_a.goto(-350, 0)

# Paddle B
paddle_b = turtle.Turtle()
paddle_b.speed(3)
paddle_b.shape("square")
paddle_b.shapesize(stretch_wid=5, stretch_len=1)
paddle_b.color('white')
paddle_b.penup()
paddle_b.goto(+350, 0)

# Ball
ball = turtle.Turtle()
ball.speed(3)
ball.shape("square")
ball.color('white')
ball.penup()
ball.goto(0, 0)

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



def paddle_a_down():
    y = paddle_a.ycor(y)
    y -= 20
    paddle_a.sety(y)



    # Keyboard binding
    wn.onkeypress(paddle_a_up, 'w')
    wn.onkeypress(paddle_a_down, 's')
#main game loop
while True:
    wn.update()