import pygame
width=640
height=480
radius=100
stroke=1
pygame.init()

window=pygame.display.set_mode((width,height))
window.fill(pygame.Color(255,255,255))

while True:
    pygame.draw.circle(window,pygame.Color(255,0,0),(width/2,height/2),radius,stroke)
    pygame.display.update()

    if pygame.QUIT in [e.type for e in pygame.event.get()]:
        Break
        
