Python 或者被指示为无效语法，我的代码有什么问题？

请看一下下面的代码，这些代码是我从makegameswithpython.2-raspberrypi第33页复制的？我在Visual Studio上运行了它，得到的第一个错误是（第73行）：

if（playerVX>0.0和playerVX

代码如下：

import pygame, sys
import pygame.locals as GAME_GLOBALS
import pygame.event as GAME_EVENTS

# pygame variables
pygame.init()

windowWidth = 800
windowHeight = 800

surface = pygame.display.set_mode((windowWidth, windowHeight))
pygame.display.set_caption('Pygame Keyboard!')

# square variables
playerSize = 20
playerX = (windowWidth / 2) - (playSize / 2)
playerY = windowHeight - playerSize
playerVX = 1.0
playerVY = 0.0
jumpHeight = 25.0
moveSpeed = 1.0
maxSpeed = 10.0
gravity = 1.0

#keybpard variables
leftDown = False
rightDown = False
haveJumped = False

def move():
    global playerX, playerY, playerVX, playerVY, haveJumped, gravity

    #move left
    if leftDown:
        # if we are already moving to the right,reset
        #the moving speed and invert the direction
        if playerVX > 0.0:
            playerVX = moveSpeed
            playerVX = -playerVX
        # make sure our square does not leave our
        #window to the left
        if playerX > 0:
           playerX += playerVX

    #move right
    if rightDown:
        #if we are already moving to the left,reset
        #the moving speed again
        if playerVX < 0.0:
            playerVX = moveSpeed
        #make sure our square does not leave our
        #window to the right
        if playerX + playerSize < windowWidth:
            playerX += playerVX

    if playerVY > 1.0:
        playerVY = player * 0.9
    else:
        playerVY = 0.0
        haveJumped - False

   # is our square in the air?
   # better add some gravity to bring it back down
    if playerY < windowHeight - playerSize:
        playerY += gravity
        gravity = gravity * 1.1
    else:
        playerY = windowHeight - playerSize
        gravity = 1.0

    playerY -= playerVY

    if (playerVX > 0.0 and playerVX < maxSpeed) or
        (playerVX < 0.0 and playerVX > -maxSpeed):
        if not haveJumped and (leftDown or rightDown)
            playerVX = playerVX * 1.1


# how to quit our program
def quitGame():
    pygame.quit()
    sys.exit()

while True:
    surface.fill((0,0,0))
    pygame.draw.rect(surface, (255,0,0),
    (playerX, playerY, playerSize, playerSize))

        #get a list of all enets that happened since
        #the last redraw
        for event in GAME_EVENTS.get():

            if event.type == pygame.KEYDOWN:

            if event.key == pygame.k_LEFT:
                leftDown = True
            if event.key == pygame.K_RIGHT:
                rightDown = True
            if event.key == pygame.K_UP:
                if not haveJumped:
                    haveJumped = True
                    playerVY += jumpHeight
            if event.key == pygame.K_ESCAPE:
                quitGame()

        if event.type == pygame.KEYUP:
            if event.key == pygame.K_LEFT:
                leftDown = False
                playerVX = moveSpeed
            if event.key == pygame.K_RIGHT:
                rightDown = False
                playerVX = moveSpeed

    if event.type == GAME_GLOBALS.QUIT:
        quitGame()

move()
pygame.display.update()    

import pygame，sys
将pygame.locals导入为GAME\u GLOBALS
将pygame.event导入为游戏\事件
#pygame变量
pygame.init（）
窗宽=800
窗高=800
surface=pygame.display.set_模式（（窗口宽度、窗口高度））
pygame.display.set_标题（'pygame键盘！'）
#平方变量
playerSize=20
playerX=（窗口宽度/2）-（播放大小/2）
playerY=窗口高度-playerSize
playerVX=1.0
playerVY=0.0
跳跃高度=25.0
移动速度=1.0
最大速度=10.0
重力=1.0
#键盘变量
leftDown=False
右下=假
havejump=False
def move（）：
全球playerX，playerY，playerVX，playerVY，haveJumped，重力
#向左移动
如果左下：
#如果我们已经向右移动，请重置
#移动速度和反转方向
如果playerVX>0.0：
playerVX=移动速度
playerVX=-playerVX
#确保我们的广场不会离开我们的广场
#左边的窗户
如果playerX>0：
playerX+=playerVX
#右移
如果右下：
#如果我们已经向左移动，请重置
#移动速度又变快了
如果playerVX<0.0：
playerVX=移动速度
#确保我们的广场不会离开我们的广场
#右边的窗户
如果playerX+playerSize<窗口宽度：
playerX+=playerVX
如果playerVY>1.0：
playerVY=player*0.9
其他：
playerVY=0.0
哈维-错
#我们的广场在空中吗？
#最好加点重力把它降下来
如果playerY0.0且playerVX-maxSpeed）：
如果没有跳转和（左下或右下）
playerVX=playerVX*1.1
#如何退出我们的计划
def quitGame（）：
pygame.quit（）
sys.exit（）
尽管如此：
表面填充（（0,0,0））
pygame.draw.rect（曲面，（255,0,0），
（playerX，playerY，playerSize，playerSize））
#获取自
#最后一次重画
对于GAME_EVENTS.get（）中的事件：
如果event.type==pygame.KEYDOWN：
如果event.key==pygame.k_左：
leftDown=True
如果event.key==pygame.K_RIGHT：
右下=真
如果event.key==pygame.K_UP：
如果没有：
正确的
playerVY+=跳跃高度
如果event.key==pygame.K_退出：
quitGame（）
如果event.type==pygame.KEYUP：
如果event.key==pygame.K_左：
leftDown=False
playerVX=移动速度
如果event.key==pygame.K_RIGHT：
右下=假
playerVX=移动速度
如果event.type==GAME\u GLOBALS.QUIT：
quitGame（）
移动（）
pygame.display.update（）

请问我的代码有什么问题吗？我该如何改变它？我已尝试删除指示错误的行并再次键入，而错误仍然存在。

您的行

if (playerVX > 0.0 and playerVX < maxSpeed) or

缺少冒号：

我更正了您的代码，是的，代码本身是错误的。 我将您的所有代码都放在本地，并对其进行了更改，这样它就不会抛出任何错误。我正在使用Python3.6和pygame的最新版本

我还留下了注释，上面写着

if playerVY>1.0

，因为有一个变量在实际上下文中不存在，我将其更改为另一个变量。方块移动到fast，所以我可能会出错，这是我的代码：

import pygame, sys
import pygame.locals as GAME_GLOBALS
import pygame.event as GAME_EVENTS

# pygame variables
pygame.init()

windowWidth = 800
windowHeight = 800

surface = pygame.display.set_mode((windowWidth, windowHeight))
pygame.display.set_caption('Pygame Keyboard!')

# square variables
playerSize = 20
playerX = (windowWidth / 2) - (playerSize / 2)
playerY = windowHeight - playerSize
playerVX = 1.0
playerVY = 0.0
jumpHeight = 25.0
moveSpeed = 1.0
maxSpeed = 10.0
gravity = 1.0

#keybpard variables
leftDown = False
rightDown = False
haveJumped = False

def move():
    global playerX, playerY, playerVX, playerVY, haveJumped, gravity

    #move left
    if leftDown:
        # if we are already moving to the right,reset
        #the moving speed and invert the direction
        if playerVX > 0.0:
            playerVX = moveSpeed
            playerVX = -playerVX
        # make sure our square does not leave our
        # window to the left
        if playerX > 0:
           playerX += playerVX

    #move right
    if rightDown:
        # if we are already moving to the left,reset
        # the moving speed again
        if playerVX < 0.0:
            playerVX = moveSpeed
        # make sure our square does not leave our
        # window to the right
        if playerX + playerSize < windowWidth:
            playerX += playerVX

    if playerVY > 1.0:
        # You tried to find the variable "player" so I guessed you meant playerVY
        # You had "playerVY = player * 0.9"
        # I don't refactor the code because I'm not sure you wanted what I made.
        playerVY = playerVY * 0.9
    else:
        playerVY = 0.0
        haveJumped = False

   # is our square in the air?
   # better add some gravity to bring it back down
    if playerY < windowHeight - playerSize:
        playerY += gravity
        gravity *= 1.1
    else:
        playerY = windowHeight - playerSize
        gravity = 1.0

    playerY -= playerVY

    if ((playerVX > 0.0 and playerVX < maxSpeed) or
        (playerVX < 0.0 and playerVX > -maxSpeed)):
        if not haveJumped and (leftDown or rightDown):
            playerVX *= 1.1


# how to quit our program
def quitGame():
    pygame.quit()
    sys.exit()

while True:
    surface.fill((0,0,0))
    pygame.draw.rect(surface, (255,0,0),
        (playerX, playerY, playerSize, playerSize)
    )

        #get a list of all enets that happened since
        #the last redraw
    for event in GAME_EVENTS.get():
       if  event.type == pygame.KEYDOWN:
           if  event.key == pygame.K_LEFT:
                leftDown = True
           if  event.key == pygame.K_RIGHT:
                rightDown = True
           if  event.key == pygame.K_UP:
                if not haveJumped:
                    haveJumped = True
                    playerVY += jumpHeight
           if event.key == pygame.K_ESCAPE:
                quitGame()

       if event.type == pygame.KEYUP:
            if event.key == pygame.K_LEFT:
                leftDown = False
            if event.key == pygame.K_RIGHT:
                rightDown = False

            if event.key in {pygame.K_LEFT, pygame.K_RIGHT}:
                playerVX = moveSpeed

       if event.type == GAME_GLOBALS.QUIT:
            quitGame()

    move()
    pygame.display.update()

函数move（）之后

编辑：

---

另外，变量没有遵循PEP-8的命名约定。

非常感谢！我只是添加了更多的括号，新的错误是：第75行如果没有跳转和（leftDown或rightDown）语法错误：无效的语法，我应该如何处理它呢？我是一个初学者，刚刚从书中复制了代码，很抱歉这些低水平questions@ruihuiliu

如果没有跳转和（leftDown或rightDown）

行缺少冒号。非常感谢！你的建议对我帮助很大！我只是检查了代码，并根据错误指示重新编写了代码，但它显示了一个白色屏幕窗口并通知了新的错误，我认为代码本身可能有一些问题，我正在考虑更改一本新书

if ((playerVX > 0.0 and playerVX < maxSpeed) or
    (playerVX < 0.0 and playerVX > -maxSpeed)):

if (playerVX > 0.0 and playerVX < maxSpeed) or \
    (playerVX < 0.0 and playerVX > -maxSpeed):

if not haveJumped and (leftDown or rightDown)

import pygame, sys
import pygame.locals as GAME_GLOBALS
import pygame.event as GAME_EVENTS

# pygame variables
pygame.init()

windowWidth = 800
windowHeight = 800

surface = pygame.display.set_mode((windowWidth, windowHeight))
pygame.display.set_caption('Pygame Keyboard!')

# square variables
playerSize = 20
playerX = (windowWidth / 2) - (playerSize / 2)
playerY = windowHeight - playerSize
playerVX = 1.0
playerVY = 0.0
jumpHeight = 25.0
moveSpeed = 1.0
maxSpeed = 10.0
gravity = 1.0

#keybpard variables
leftDown = False
rightDown = False
haveJumped = False

def move():
    global playerX, playerY, playerVX, playerVY, haveJumped, gravity

    #move left
    if leftDown:
        # if we are already moving to the right,reset
        #the moving speed and invert the direction
        if playerVX > 0.0:
            playerVX = moveSpeed
            playerVX = -playerVX
        # make sure our square does not leave our
        # window to the left
        if playerX > 0:
           playerX += playerVX

    #move right
    if rightDown:
        # if we are already moving to the left,reset
        # the moving speed again
        if playerVX < 0.0:
            playerVX = moveSpeed
        # make sure our square does not leave our
        # window to the right
        if playerX + playerSize < windowWidth:
            playerX += playerVX

    if playerVY > 1.0:
        # You tried to find the variable "player" so I guessed you meant playerVY
        # You had "playerVY = player * 0.9"
        # I don't refactor the code because I'm not sure you wanted what I made.
        playerVY = playerVY * 0.9
    else:
        playerVY = 0.0
        haveJumped = False

   # is our square in the air?
   # better add some gravity to bring it back down
    if playerY < windowHeight - playerSize:
        playerY += gravity
        gravity *= 1.1
    else:
        playerY = windowHeight - playerSize
        gravity = 1.0

    playerY -= playerVY

    if ((playerVX > 0.0 and playerVX < maxSpeed) or
        (playerVX < 0.0 and playerVX > -maxSpeed)):
        if not haveJumped and (leftDown or rightDown):
            playerVX *= 1.1


# how to quit our program
def quitGame():
    pygame.quit()
    sys.exit()

while True:
    surface.fill((0,0,0))
    pygame.draw.rect(surface, (255,0,0),
        (playerX, playerY, playerSize, playerSize)
    )

        #get a list of all enets that happened since
        #the last redraw
    for event in GAME_EVENTS.get():
       if  event.type == pygame.KEYDOWN:
           if  event.key == pygame.K_LEFT:
                leftDown = True
           if  event.key == pygame.K_RIGHT:
                rightDown = True
           if  event.key == pygame.K_UP:
                if not haveJumped:
                    haveJumped = True
                    playerVY += jumpHeight
           if event.key == pygame.K_ESCAPE:
                quitGame()

       if event.type == pygame.KEYUP:
            if event.key == pygame.K_LEFT:
                leftDown = False
            if event.key == pygame.K_RIGHT:
                rightDown = False

            if event.key in {pygame.K_LEFT, pygame.K_RIGHT}:
                playerVX = moveSpeed

       if event.type == GAME_GLOBALS.QUIT:
            quitGame()

    move()
    pygame.display.update()

sched = BackgroundScheduler()
sched.start()
sched.add_job(move, "interval", seconds = 0.04)