pong game

Question

The code bellow is pong game. Its working in pycharm but not in Idle. Can anyone help me to run this in the python idle 3.7.3 please .

import turtle

wn = turtle .Screen()
wn.title("Pong by Amodh")
wn.bgcolor("black")
wn.setup(width=800, height=600)
wn.tracer(0)
#paddle A
pad_a = turtle.Turtle()
pad_a.speed(0)
pad_a.shape("square")
pad_a.color("white")
pad_a.shapesize(stretch_wid=5, stretch_len=1)
pad_a.penup()
pad_a.goto(-350, 0)

#paddle B

#Ball

#main loop
while True:
wn.update