Moving Octagon On Python

[jtran57]

I am trying to make the shape move here is my coding

bif="space.jpg"

import pygame, sys
from pygame.locals import *

points=[(-60,20),(-60,-20),(-20,60),(20,60),(60,20),(60,-20),(20,-60),(-20,60)]
colour=(0,191,255)

pygame.init()

screen=pygame.display.set_mode((1280,800),0,32)
background=pygame.image.load(bif).convert()

x,y=0,0
movex,movey=0,0

while True:

for event in pygame.event.get():
    if event.type == QUIT:
        pygame.quit()
        sys.exit()
    if event.type==KEYDOWN:
        if event.key==K_LEFT:
            movex=-1
        elif event.key==K_RIGHT:
            movex=+1
        elif event.key==K_UP:
            movey=-1
        elif event.key==K_DOWN:
            movey=+1
    if event.type==KEYUP:
        if event.key==K_LEFT:
             movex=0
        elif event.key==K_RIGHT:
            movex=0
        elif event.key==K_UP:
            movey=0
        elif event.key==K_DOWN:
            movey=0

x+=movex
y+=movey

screen.blit(background,(0,0))

pygame.draw.polygon(screen,colour,points)

pygame.display.update()