Ошибка pygame.sprite.spritecollide

hits = pygame.sprite.spritecollide(rect, rect1, False)

import pygame
from random import *
 
pygame.init()
 
winHeight = 500
winWidth = 500
 
win = pygame.display.set_mode((winWidth, winHeight))
 
pygame.display.set_caption("Walking Mcuinn")
 
walkRight = [pygame.image.load('Sprites/Pie1.png'), pygame.image.load('Sprites/Pie1.png'), pygame.image.
             load('Sprites/Pie1.png'),
             pygame.image.load('Sprites/Pie1.png'), pygame.image.load('Sprites/Pie1.png'), pygame.image.
             load('Sprites/Pie1.png')]
 
walkLeft = [pygame.image.load('Sprites/Pie1.png'), pygame.image.load('Sprites/Pie1.png'), pygame.image.
            load('Sprites/Pie1.png'), pygame.image.load('Sprites/Pie1.png'), pygame.image
            .load('Sprites/Pie1.png'), pygame.image.load('Sprites/Pie1.png')]
 
bg = pygame.image.load('Sprites/bg.jpg')
playerStand = pygame.image.load('Sprites/Pie1.png')
playerStand1 = pygame.image.load('Sprites/Pie.png')
 
 
clock = pygame.time.Clock()
 
width = 63
height = 112
 
width1 = 115
height1 = 203
 
speed = 5
x = 50
y = 500 - height - speed - 10
 
x1 = 300
y1 = 500 - height1 - speed - 10
 
isJump = False
jumpCount = 10
 
left = False
right = False
animCount = 0
lastMove = "right"
 
 
class Snaryad:
    def __init__(self, x, y, radius, color, facing):
        self.x = x
        self.y = y
        self.radius = radius
        self.color = color
        self.facing = facing
        self.vel = 8 * facing
 
    def draw(self):
        win.blit(bulletStand, (self.x, self.y))
 
 
def drawWindow():
    global animCount
    win.blit(bg, (0, 0))
 
    if animCount + 1 >= 30:
        animCount = 0
 
    if left:
        win.blit(walkLeft[animCount // 5], (x, y))
        animCount += 1
    elif right:
        win.blit(walkRight[animCount // 5], (x, y))
        animCount += 1
    else:
        win.blit(playerStand, (x, y))
    win.blit(playerStand1, (x1, y1))
 
    for bullet in bullets:
        bullet.draw()
 
    pygame.display.update()
 
 
run = True
bullets = []
rect = playerStand.get_rect()
rect1 = playerStand1.get_rect()
 
dontChange = False
running = True
while run:
 
    hits = pygame.sprite.spritecollide(rect, rect1, False)
    if hits:
        running = False
    if not dontChange:
        res = randrange(0, 3)
 
    if res == 1:
        bulletStand = pygame.image.load('Sprites/Computer.png')
        dontChange = True
 
    else:
        bulletStand = pygame.image.load('Sprites/iphone.png')
        dontChange = True
 
    clock.tick(30)
 
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            run = False
 
    for bullet in bullets:
        if bullet.x < 500 and bullet.x > 0:
            bullet.x += bullet.vel
        else:
            bullets.pop(bullets.index(bullet))
            dontChange = False
 
    keys = pygame.key.get_pressed()
 
    if keys[pygame.K_f]:
        if lastMove == "right":
            facing = 1
        else:
            facing = -1
        if len(bullets) < 1:
            bullets.append(Snaryad(round(x + width // 2), round(y + height // 2),
                                5, (0, 0, 0), facing))
 
    if keys[pygame.K_LEFT] and x > speed:
        left = True
        right = False
        x -= speed
        lastMove = "left"
    if running:
        if keys[pygame.K_RIGHT] and x < winWidth - width - speed:
            left = False
            right = True
            x += speed
            lastMove = "right"
 
    else:
        left = False
        right = False
        animCount = 0
    if not isJump:
        if keys[pygame.K_UP]:
            isJump = True
    else:
        if jumpCount >= -10:
            if jumpCount < 0:
                y += (jumpCount ** 2) / 2
            else:
                y -= (jumpCount ** 2) / 2
            jumpCount -= 1
        else:
            isJump = False
            jumpCount = 10
 
    drawWindow()
 
pygame.quit()