如何修复Python TypeError：不支持的操作数类型&x27；int'；和'；元组'；

我试图用Youtube教程构建我的第一个游戏，但我遇到了这个错误，我不知道如何修复它。请帮助：）

回溯（最近一次呼叫最后一次）： 文件“C:\Users\Admin\Documents\Python Tut\FirstGame\FirstGame.py”，第144行，在 bullet.x+=bullet.vel TypeError:不支持+=：“int”和“tuple”的操作数类型

我的代码：

import pygame
pygame.init()


window = pygame.display.set_mode((600, 480))

pygame.display.set_caption('First Game')

#load character images
walkRight = [pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/R1.png'), 
pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/R2.png'), 
pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/R3.png'), 
pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/R4.png'), 
pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/R5.png'), 
pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/R6.png'), 
pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/R7.png'), 
pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/R8.png'), 
pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/R9.png')]
walkLeft = [pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/L1.png'), 
pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/L2.png'), 
pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/L3.png'), 
pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/L4.png'), 
pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/L5.png'), 
pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/L6.png'), 
pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/L7.png'), 
pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/L8.png'), 
pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/L9.png')]
bg = pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/bg.jpg')
char = pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/standing.png')

clock = pygame.time.Clock()

#Character
class player(object):
    def __init__(self, x, y, width, height):
        self.x = x
        self.y = y
        self.width = width
        self.height = height
        self.vel = 5
        self.isJump = False
        self.jumpCount = 10
        self.left = False
        self.right = False
        self.walkCount = 0
        self.standing = True
        self.hitbox = (self.x + 17, self.y + 11, 29, 52)

def draw(self, window):
    if self.walkCount + 1 >= 27:
        self.walkCount = 0
    if not(self.standing):
        if self.left:
            window.blit(walkLeft[self.walkCount//3], (self.x,self.y))
            self.walkCount += 1
        elif self.right:
            window.blit(walkRight[self.walkCount//3], (self.x,self.y))
            self.walkCount += 1
    else:
        if self.right:
            window.blit(walkRight[0], (self.x, self.y))
        else:
            window.blit(walkLeft[0], (self.x, self.y))
    self.hitbox = (self.x + 17, self.y + 11, 29, 52)
    pygame.draw.rect(window, (255, 0, 0), self.hitbox, 2)


class projectile(object):
    def __init__ (self, x, y, radius, facing, color):
        self.x = x
        self.y = y
        self.radius = radius
        self.color = color
        self.facing = facing
        self.vel = 8 * facing

    def draw(self, window):
        pygame.draw.circle(window, self.color, (self.x, self.y), self.radius)


#Enemy
class enemy(object):
walkRight = [pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/R1E.png'), 
pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/R2E.png'), 
pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/R3E.png'), 
pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/R4E.png'), 
pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/R5E.png'), 
pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/R6E.png'), 
pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/R7E.png'), 
pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/R8E.png'), 
pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/R9E.png'), 
pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/R10E.png'), 
pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/R11E.png')]
walkLeft = [pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/L1E.png'), 
pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/L2E.png'), 
pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/L3E.png'), 
pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/L4E.png'), 
pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/L5E.png'), 
pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/L6E.png'), 
pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/L7E.png'), 
pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/L8E.png'), 
pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/L9E.png'), 
pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/L10E.png'), 
pygame.image.load('C:/Users/Admin/Documents/Python Tut/FirstGame/L11E.png')]

def __init__ (self, x, y, width, height, end):
    self.x = x
    self.y = y
    self.width = width
    self.height = height
    self.end = end
    self.path = [self.x, self.end]
    self.walkCount = 0
    self.vel = 3
    self.hitbox = (self.x + 17, self.y + 2, 31, 57)

def draw(self, window):
    self.move()
    if self.walkCount + 1 >= 33:
        self.walkCount = 0

    if self.vel > 0:
        window.blit(self.walkRight[self.walkCount //3], (self.x, self.y))
        self.walkCount += 1
    else:
        window.blit(self.walkLeft[self.walkCount //3], (self.x, self.y))
        self.walkCount += 1
    self.hitbox = (self.x + 17, self.y + 2, 31, 57)
    pygame.draw.rect(window, (255, 0, 0), self.hitbox, 2)


def move(self):
    if self.vel > 0:
        if self.x + self.vel < self.path[1]:
            self.x += self.vel
        else:
            self.vel = self.vel * -1
            self.walkCount = 0
    else:
        if self.x - self.vel > self.path[0]:
            self.x += self.vel
        else:
            self.vel = self.vel * -1
            self.walkCount = 0


def hit(self):
    print('hit')


def redrawGameWindow():
    window.blit(bg, (0,0))
    man.draw(window)
    goblin.draw(window)
    for bullet in bullets:
        bullet.draw(window)

    pygame.display.update()


#mainloop
man = player(200, 400, 64, 64)
goblin = enemy(100, 400, 64, 64, 460)
bullets = []
run = True
while run:
   clock.tick(27)

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

for bullet in bullets:
    if bullet.y - bullet.radius < goblin.hitbox[1] + goblin.hitbox[3] and bullet.y + bullet.radius > 
    goblin.hitbox[1]:
        if bullet.x + bullet.radius > goblin.hitbox[0] and bullet.x - bullet.radius < 
        goblin.hitbox[0] + goblin.hitbox[2]:
            goblin.hit()
            bullets.pop(bullets.index(bullet))

    if bullet.x < 600 and bullet.x > 0:
        bullet.x += bullet.vel
    else:
        bullets.pop(bullets.index(bullet))

#Movement
keys = pygame.key.get_pressed()

if keys[pygame.K_SPACE]:
    if man.left:
        facing = -1
    else:
        facing = 1

    if len(bullets) < 5:
        bullets.append(projectile(round(man.x + man.width //2), round(man.y + man.height //2), 6, 
        (0,0,0), facing))

if keys[pygame.K_LEFT] and man.x > man.vel:
    man.x -= man.vel
    man.left = True
    man.right = False
    man.standing = False
elif keys[pygame.K_RIGHT] and man.x < 600 - man.width - man.vel:
    man.x += man.vel
    man.right = True
    man.left = False
    man.standing = False
else:
    man.standing = True
    man.walkCount = 0

if not(man.isJump):
    if keys[pygame.K_UP]:
        man.isJump = True
        man.walkCount = 0
else:
    if man.jumpCount >= -10:
        neg = 1
        if man.jumpCount < 0:
            neg = -1
        man.y -= (man.jumpCount ** 2) * 0.5 * neg
        man.jumpCount -= 1
    else:
        man.isJump = False
        man.jumpCount = 10

redrawGameWindow()
pygame.quit()

导入pygame
pygame.init（）
window=pygame.display.set_模式（（600480））
pygame.display.set_标题（“第一场游戏”）
#加载字符图像
walkRight=[pygame.image.load（'C:/Users/Admin/Documents/Python-Tut/FirstGame/R1.png'），
pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/R2.png'），
pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/R3.png'），
pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/R4.png'），
pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/R5.png'），
pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/R6.png'），
pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/R7.png'），
pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/R8.png'），
pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/R9.png'）]
walkLeft=[pygame.image.load（'C:/Users/Admin/Documents/Python-Tut/FirstGame/L1.png'），
pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/L2.png'），
pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/L3.png'），
pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/L4.png'），
pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/L5.png'），
pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/L6.png'），
pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/L7.png'），
pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/L8.png'），
pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/L9.png'）]
bg=pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/bg.jpg'））
char=pygame.image.load（'C:/Users/Admin/Documents/Python-Tut/FirstGame/standing.png'））
clock=pygame.time.clock（）
#性格
类播放器（对象）：
定义初始值（自、x、y、宽度、高度）：
self.x=x
self.y=y
self.width=宽度
自我高度=高度
self.vel=5
self.isJump=False
self.jumpCount=10
self.left=False
self.right=False
self.walkCount=0
自立
self.hitbox=（self.x+17，self.y+11,29,52）
def绘图（自，窗口）：
如果self.walkCount+1>=27：
self.walkCount=0
如果不是（自立）：
如果self.left：
blit（walkLeft[self.walkCount//3]，（self.x，self.y））
self.walkCount+=1
elif self.right：
blit（walkRight[self.walkCount//3]，（self.x，self.y））
self.walkCount+=1
其他：
如果你是对的：
blit（walkRight[0]，（self.x，self.y））
其他：
blit（walkLeft[0]，（self.x，self.y））
self.hitbox=（self.x+17，self.y+11,29,52）
pygame.draw.rect（窗口，（255,0,0），self.hitbox，2）
类（对象）：
定义初始（自、x、y、半径、面、颜色）：
self.x=x
self.y=y
自半径=半径
self.color=颜色
自我面对
self.vel=8*端面
def绘图（自，窗口）：
pygame.draw.circle（窗口，self.color，（self.x，self.y），self.radius）
#敌人
类敌人（对象）：
walkRight=[pygame.image.load（'C:/Users/Admin/Documents/Python-Tut/FirstGame/R1E.png'），
pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/R2E.png'），
pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/R3E.png'），
pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/R4E.png'），
pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/R5E.png'），
pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/R6E.png'），
pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/R7E.png'），
pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/R8E.png'），
pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/R9E.png'），
pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/R10E.png'），
pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/R11E.png'）]
walkLeft=[pygame.image.load（'C:/Users/Admin/Documents/Python-Tut/FirstGame/L1E.png'），
pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/L2E.png'），
pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/L3E.png'），
pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/L4E.png'），
pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/L5E.png'），
pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/L6E.png'），
pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/L7E.png'），
pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/L8E.png'），
pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/L9E.png'），
pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/L10E.png'），
pygame.image.load（'C:/Users/Admin/Documents/pythontut/FirstGame/L11E.png'）]
定义初始（自、x、y、宽度、高度、终点）：
self.x=x
self.y=y
self.width=宽度
自我高度=高度
self.end=结束
self.path=[self.x，self.end]
self.walkCount=0
self.vel=3
self.hitbox=（self.x+17，self.y+2,31,57）
def绘图（自，窗口）：
self.move（）
如果self.walkCount+1>=33：
self.walkCount=0
如果self.vel>0：
blit（self.walkRight[self.walkCount//3]，（self.x，self.y））
self.walkCount+=1
其他：
blit（self.walkLeft[self.walkCount//3]，（self.x，self.y））
self.walkCount+=1
self.hitbox=（self.x+17，self.y+
bullet.x += bullet.vel.x