Easy Python Game

import pygame

#Display resolution
pygame.init()
win = pygame.display.set_mode((500, 500))

#Game name
pygame.display.set_caption('BAD GUY')

#Player
x = 250
y = 475
width = 20
height = 25
speed = 20

#To close the game
run = True
while run:
    pygame.time.delay(100)

for event in pygame.event.get():
    if event.type == pygame.QUIT:
        run = False

#Move rigth/left
keys = pygame.key.get_pressed()
if keys[pygame.K_LEFT] and x > 5:
    x -= speed

if keys[pygame.K_RIGHT] and x < 500 -width - 5:
    x += speed

#Jump
if not(isJump):
    if keys[pygame.K_UP] and y > 5:
        y -= speed

if keys[pygame.K_DOWN] and y < 500 -width - 5:
    y += speed

if keys[pygame.K_SPACE]:
    isJump = True

else:
    if jumpCount >= 10:
        if jumpCount < 0:
            y += (jumpCount ** 2) / 2
            y -= (jumpCount ** 2) / 2
            jumpCount -= 1
    else:
        isJump = False
        jumpCount = 10

#Background and hero color
win.fill((0,0,0))

pygame.draw.rect(win, (0,0,255), (x, y, width, height))

pygame.display.update()

#Exit game
pygame.quit()