老师我这个启动类的run方法为什么爆红呢?
我的pom文件是这样的
老师,我完全按照视频里的步骤来,但是子项目继承父项目一直报红
错误信息:Project 'com.jungle:parent:1.0-SNAPSHOT' not found
我在百度也没找出问题来
这个朴素贝叶斯方法要求各个特征相互独立,实际工作中我们怎么 去判断各个特征之间是否相互独立呢?
老师请问,这里前端传过来的TbUser,不需要加@RequestBody这个注释吗?这是为什么呢
pygametimerandom pygame.sprite Sprite SCREEN_WIDTH = SCREEN_HEIGHT = BG_COLOR = pygame.Color() TEXT_COLOR = pygame.Color() BaseItem(Sprite): (): pygame.sprite.Sprite.() MainGame(): window = my_tank = enemyTankList = [] enemyTankCount = myBulletList = [] enemyBulletList = [] explodeList = [] (): (): pygame.display.init() MainGame.window = pygame.display.set_mode([SCREEN_WIDTHSCREEN_HEIGHT]) MainGame.my_tank = Tank() .createEnemyTank() pygame.display.set_caption() : time.sleep() MainGame.window.fill(BG_COLOR) .getEvent() MainGame.window.blit(.getTextSuface(% (MainGame.enemyTankList))()) MainGame.my_tank MainGame.my_tank.live: MainGame.my_tank.displayTank() : MainGame.my_tank MainGame.my_tank = .blitEnemyTank() .blitMyBullet() .blitEnemyBullet() .blitExplode() MainGame.my_tank MainGame.my_tank.live: MainGame.my_tank.stop: MainGame.my_tank.move() pygame.display.update() (): top = i (MainGame.enemyTankCount): left = random.randint() speed = random.randint() enemy = EnemyTank(lefttopspeed) MainGame.enemyTankList.append(enemy) (): enemyTank MainGame.enemyTankList: enemyTank.live: enemyTank.displayTank() enemyTank.randMove() enemyBullet = enemyTank.shot() enemyBullet: MainGame.enemyBulletList.append(enemyBullet) : MainGame.enemyTankList.remove(enemyTank) (): myBullet MainGame.myBulletList: myBullet.live: myBullet.displayBullet() myBullet.move() myBullet.myBullet_hit_enemyTank() : MainGame.myBulletList.remove(myBullet) (): enemyBullet MainGame.enemyBulletList: enemyBullet.live: enemyBullet.displayBullet() enemyBullet.move() enemyBullet.enemyBullet_hit_myTank() : MainGame.enemyBulletList.remove(enemyBullet) (): explode MainGame.explodeList: explode.live: explode.displayExplode() : MainGame.explodeList.remove(explode) (): () () (text): pygame.font.init() font = pygame.font.SysFont() textSuface = font.render(textTEXT_COLOR) textSuface (): eventList = pygame.event.get() event eventList: event.type == pygame.QUIT: .endGame() event.type == pygame.KEYDOWN: MainGame.my_tank MainGame.my_tank.live: event.key == pygame.K_LEFT: MainGame.my_tank.direction = MainGame.my_tank.stop = () event.key == pygame.K_RIGHT: MainGame.my_tank.direction = MainGame.my_tank.stop = () event.key == pygame.K_UP: MainGame.my_tank.direction = MainGame.my_tank.stop = () event.key == pygame.K_DOWN: MainGame.my_tank.direction = MainGame.my_tank.stop = () event.key == pygame.K_SPACE: () (MainGame.myBulletList) < : myBullet = Bullet(MainGame.my_tank) MainGame.myBulletList.append(myBullet) event.type == pygame.KEYUP: event.key == pygame.K_UP event.key == pygame.K_DOWN event.key == pygame.K_RIGHT event.key == pygame.K_LEFT: MainGame.my_tank MainGame.my_tank.live: MainGame.my_tank.stop = Tank(Sprite): (lefttop): .images = { : pygame.image.load(): pygame.image.load(): pygame.image.load(): pygame.image.load()} .direction = .image = .images[.direction] .rect = .image.get_rect() .rect.left = left .rect.top = top .speed = .stop = .live = (): .direction == : .rect.left > : .rect.left -= .speed .direction == : .rect.left + .rect.height < SCREEN_WIDTH: .rect.left += .speed .direction == : .rect.top > : .rect.top -= .speed .direction == : .rect.top + .rect.height < SCREEN_HEIGHT: .rect.top += .speed (): Bullet() (): .image = .images[.direction] MainGame.window.blit(.image.rect) MyTank(Tank): (): EnemyTank(Tank): (lefttopspeed): (EnemyTank).(lefttop) .images = { : pygame.image.load(): pygame.image.load(): pygame.image.load(): pygame.image.load()} .direction = .randDirection() .image = .images[.direction] .rect = .image.get_rect() .rect.left = left .rect.top = top .speed = speed .flag = .step = (): num = random.randint() num == : num == : num == : num == : (): .step <= : .direction = .randDirection() .step = : .move() .step -= (): num = random.randint() num < : Bullet() Bullet(Sprite): (Tank): .image = pygame.image.load() .direction = Tank.direction .rect = .image.get_rect() .direction == : .rect.left = Tank.rect.left + Tank.rect.width / - .rect.width / .rect.top = Tank.rect.top - .rect.height .direction == : .rect.left = Tank.rect.left + Tank.rect.width / - .rect.width / .rect.top = Tank.rect.top + Tank.rect.height .direction == : .rect.left = Tank.rect.left - .rect.height .rect.top = Tank.rect.top + Tank.rect.width / - .rect.height / .direction == : .rect.left = Tank.rect.left + Tank.rect.height .rect.top = Tank.rect.top + Tank.rect.height / - .rect.height / .speed = .live = (): .direction == : .rect.top > : .rect.top -= .speed : .live = .direction == : .rect.top + .rect.height < SCREEN_HEIGHT: .rect.top += .speed : .live = .direction == : .rect.left > : .rect.left -= .speed : .live = .direction == : .rect.left + .rect.width < SCREEN_WIDTH: .rect.left += .speed : .live = (): MainGame.window.blit(.image.rect) (): enemyTank MainGame.enemyTankList: pygame.sprite.collide_rect(enemyTank): enemyTank.live = .live = explode = Explode(enemyTank) MainGame.explodeList.append(explode) (): MainGame.my_tank MainGame.my_tank.live: pygame.sprite.collide_rect(MainGame.my_tank): explode = Explode(MainGame.my_tank) MainGame.explodeList.append(explode) .live = MainGame.my_tank.live = Wall(): (): (): Explode(): (tank): .rect = tank.rect .images = [ pygame.image.load()pygame.image.load()pygame.image.load()pygame.image.load()pygame.image.load()] .step = .image = .images[.step] .live = (): .step < (.images): .image = .images[.step] .step += MainGame.window.blit(.image.rect) : .live = .step = Music(): (): (): __name__ == : MainGame().startGame()
老师 为啥我写完后敌方子弹碰到我方坦克后整个画面就卡住不动了呢,也不报错
s="爱你一百遍" ss=s*100 print(ss) #100次循环打印 for i in range(100): print("第%d 次%s"%((i+1),s))
老师 如上面的代码中 print("第%d 次%s"%((i+1),s))1、代码里的%d和%s的作用是干嘛的??能不能解释一下这句代码
2、"第%d 次%s"% 字符串后面怎么还加一个%?
老师,idea怎么找不到相对路径,自己在网上找了一些资料也没搞明白
public class TestVariable {
public static void main(String[] args){
int age=18;
int b; //只是声明了变量b,没有初始化;
int x=0,y=0,z=1;
System.out.println(age);
b = 0; //使用之前,必须初始化!
System.out.println(b);
System.out.println(z);
}
老师这是我写的代码,然后显示的提示的是这样
错误: 仅当显式请求注释处理时才接受类名称 'TestVariable'
1 个错误
E:\mycode>
tkinter * tkinter messagebox root= Tk() btn01 = Button(root) btn01[]=btn01.pack() songhua(): messagebox.showinfo(,) () btn01.bind(,songhua) root.mainloop()
老师,搞了好多天,实在是搞不定了,麻烦能帮忙看一下吗?这个问题真的困扰我太久了。如下图报错
一直提示拒绝连接,我网上查说是端口没有开启,我把端口全部开启了,也不行,一直报这个,换了其它端口也不行,已经实在是没有办法了啊,求求老师帮忙解决一下啊。
在bean标签什么时候id属性需要,什么时候不需要
老师,我想问一下当线程池里面有1个以上的线程同时运行时,这里Runnable任务的运行结果的顺序是不是就肯定不能保证。有没有方法可以让运行速度变快,又能让结果是按顺序显示的。
老师,centos7在安装ftp的时候,yum install -y vsftpd出现图中的报错,有什么解决办法吗?百度了半天也没有解决,求教
老师,我在hbuilder中打开的时候,出现了一张有照片,一张没有照片,出现照片的是相对路径的照片。
而在复制粘贴之后到桌面上的HTML打开的是绝对路径的显示照片,而相对路径不显示。
以下是代码:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<body>
<!--相对路径-->
<img src="img/2.jpg" />
<!--绝对路径-->
<img src="F:\\百战网页编程与设计\\项目\\01HTML\\img\\1.jpg" />
<!--网络路径-->
<img src="https://www.baidu.com/img/PCtm_d9c8750bed0b3c7d089fa7d55720d6cf.png" />
<p>
6666
<a href="#">
<img src="img/2.jpg" title="图片2" width="200px" height="100px" border="2px" alt="图片显示错误" align="center" />
</a>
8888
</p>
</body>
</html>
就很奇怪,望能解答,谢谢。
这个是什么原因?
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