有效沟通问答-【官方】百战程序员_IT在线教育培训机构

"""
新增功能：
    加载我方坦克
"""
#导入pygame模块
#encoding=UTF-8
import pygame
SCREEN_WIDTH=700
SCREEN_HEIGHT=500
BG_COLOR=pygame.Color(0,0,0)       #黑色
TEXT_COLOR=pygame.Color(255,0,0)    #红色

class MainGame():
    window=None       #窗口对象，初始化为None
    my_tank=None
    def __init__(self):
        pass
    # 开始游戏
    def startGame(self):
        #加载主窗口
        #初始化窗口
        pygame.display.init()
        #设置窗口的大小和显示
        MainGame.window = pygame.display.set_mode([SCREEN_WIDTH,SCREEN_HEIGHT])
        #初始化我方坦克
        MainGame.my_tank=Tank(350,250)
        #设置窗口标题
        pygame.display.set_caption("坦克大战游戏1.03窗口")
        while True:
            #给当前窗口设置填充色
            MainGame.window.fill(BG_COLOR)
            #获取事件
            self.getEvent()
            #绘制文字
            MainGame.window.blit(self.getTextSurface("敌方坦克剩余数量%d"%6),(10,10))
            #调用坦克显示的方法
            MainGame.my_tank.displayTank()
            pygame.display.update()
    # 结束游戏
    def endGame(self):
        print("谢谢使用，欢迎再次使用")
        exit()
    #左上角的文字绘制
    def getTextSurface(self,text):
        #初始化字体模块
        pygame.font.init()
        #查看所有字体名称
        # print(pygame.font.get_fonts())
        #获取字体font对象
        font=pygame.font.SysFont("kaiti",18)
        #绘制文字信息
        textSurface=font.render(text,True,TEXT_COLOR)
        return textSurface
    #获取事件
    def getEvent(self):
        #获取所有事件
        eventList=pygame.event.get()
        #遍历事件
        for event in eventList:
            #判断按下的键是关闭还是键盘
            #如果按的是退出，则关闭窗口
            if event.type == pygame.QUIT:
                self.endGame()
            elif event.type == pygame.KEYDOWN:
                #判断按下的是上、下、左或右
                if event.key == pygame.K_LEFT:
                    print("按下左方向键，坦克向左移动")
                elif event.key == pygame.K_RIGHT:
                    print("按下右方向键，坦克向右移动")
                elif event.key == pygame.K_UP:
                    print("按下上方向键，坦克向上移动")
                elif event.key == pygame.K_DOWN:
                    print("按下下方向键，坦克向下移动")
# STEP2、坦克类：我方坦克，敌方坦克
class Tank():
    #添加距离左边left，距离上边top
    def __init__(self,left,top):
        #保存加载的图片
        self.images={'U':pygame.image.load('tankgame/img/p1tankU.gif'),
                     'D':pygame.image.load('tankgame/img/p1tankD.gif'),
                     'R':pygame.image.load('tankgame/img/p1tankR.gif'),
                     'L':pygame.image.load('tankgame/img/p1tankL.gif')
                     }
        #方向
        self.direction='U'
        #根据当前图片的方向获取图片
        self.image=self.images[self.direction]
        #根据图片获取图片
        self.rect=self.image.get_rect()
        #设置区域的left和top
        self.rect.left=left
        self.rect.top=top

    # 移动
    def move(self):
        pass

    # 射击
    def shot(self):
        pass

    # 展示坦克的方法
    def displayTank(self):
        #获取展示的对象
        self.image=self.images[self.direction]
        #调用blit方法展示
        MainGame.window.blit(self.image,self.rect)
# 我方坦克
class MyTank(Tank):
    def __init__(self):
        pass
# 敌方坦克
class EnemyTank(Tank):
    def __init__(self):
        pass
class Bullet():
    def __init__(self):
        pass

    # 子弹移动的方法
    def move(self):
        pass

    # 展示子弹的方法
    def displayBullet(self):
        pass
class Wall():
    def __init__(self):
        pass

    # 展示墙壁的方法
    def displayWall(self):
        pass
class Explode():
    def __init__(self):
        pass

    # 展示爆炸效果的方法
    def displayExplode(self):
        pass
class Music():
    def __init__(self):
        pass

    # 播放音乐的方法
    def play(self):
        pass
if __name__=="__main__":
    MainGame().startGame()
    #MainGame().getTextSurface()

二、结果

三、问题

老师，帮忙看一下是什么问题，路径设置也检查了没问题，代码也是一行行敲得

Python 全系列/第二阶段：Python 深入与提高/游戏开发-坦克大战 31351楼

关于methods=['GET','POST']这里的要区分大小写吧？

Python 全系列/第八阶段：轻量级Web开发利器-Flask框架/Flask高级 31352楼

一、代码

import os
os.system("cmd")

二、问题

请问用python程序修改dos窗口的大小，位置和字体设置怎么编程

Python 全系列/第二阶段：Python 深入与提高/文件处理 31353楼

老师，这样写m.puth(m[0]）,为什么报错呢？

  <script>
    
   	var t=document.title;
   	var m=t.split("");
   	console.log(m);
   	 m.puth(m[0]);
   	console.log(m);
  </script>

WEB前端全系列/第二阶段：JavaScript编程模块/DOM模型 31354楼

老师好：我有点不太明白SMO算法中，选择第一个变量的时候说的违反KKT条件，这个KKT条件是怎么来的？

我知道原始SVM问题是一个二次优化问题，通过KKT条件来求解，优化空间从w与b变换到了α空间进行优化，此时仍然带着原始问题的KKT条件。接着对α的求解我们采用SMO算法，虽然SMO的求解思路是大二次优化问题花间为多个二元的小二次优化问题，但是求解的思路是直接对二元目标函数直接求导来寻找最优解，并通过约束条件对求导找到的最优解进行剪裁，来得到满足约束条件的最优解。

但是对于优化参数选择中第一个参数的选择上，说找到第一个违反KKT条件的参数α，这里所说的KKT条件是怎么一会事？是指SMO算法所要求解的目标函数的KKT条件吗？如果是这样，在视频中并未提及这个KKT是怎么来的，只是直接给出，我自己试着退了一下，并未得到对应结果，所以想请教老师，在SMO算法选择第一个参数α，所说的KKT条件是怎么来的？

人工智能/第六阶段：机器学习-线性分类/SMO优化算法 31355楼

老师，我不明白为什么title的类型为字符串呢，其他的都为对象。

<div  id="d"  style="width: 100px;height: 100px;background: red">文本</div>

   <script>
    
   	var t=document.getElementById("d");
   	console.log(typeof(t));
   	 console.log(typeof(document.title));
   	 console.log(typeof(document.head));
   	  console.log(typeof(document.body));

  </script>

WEB前端全系列/第二阶段：JavaScript编程模块/DOM模型 31356楼

老师，我这边接口serviceapi，provider01，provider02 都启动正常

2020-07-07 17:04:11.963 ERROR 15980 --- [nfoReplicator-0] c.n.d.s.t.d.RedirectingEurekaHttpClient : Request execution error. endpoint=DefaultEndpoint{ serviceUrl='http://localhost:8085/eureka/}

com.sun.jersey.api.client.ClientHandlerException: java.net.ConnectException: Connection refused: connect

at com.sun.jersey.client.apache4.ApacheHttpClient4Handler.handle(ApacheHttpClient4Handler.java:187) ~[jersey-apache-client4-1.19.1.jar:1.19.1]

at com.sun.jersey.api.client.filter.GZIPContentEncodingFilter.handle(GZIPContentEncodingFilter.java:123) ~[jersey-client-1.19.1.jar:1.19.1]

at com.netflix.discovery.EurekaIdentityHeaderFilter.handle(EurekaIdentityHeaderFilter.java:27) ~[eureka-client-1.9.13.jar:1.9.13]

at com.sun.jersey.api.client.Client.handle(Client.java:652) ~[jersey-client-1.19.1.jar:1.19.1]

at com.sun.jersey.api.client.WebResource.handle(WebResource.java:682) ~[jersey-client-1.19.1.jar:1.19.1]

at com.sun.jersey.api.client.WebResource.access$200(WebResource.java:74) ~[jersey-client-1.19.1.jar:1.19.1]

at com.sun.jersey.api.client.WebResource$Builder.post(WebResource.java:570) ~[jersey-client-1.19.1.jar:1.19.1]

at com.netflix.discovery.shared.transport.jersey.AbstractJerseyEurekaHttpClient.register(AbstractJerseyEurekaHttpClient.java:56) ~[eureka-client-1.9.13.jar:1.9.13]

at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$1.execute(EurekaHttpClientDecorator.java:59) [eureka-client-1.9.13.jar:1.9.13]

at com.netflix.discovery.shared.transport.decorator.MetricsCollectingEurekaHttpClient.execute(MetricsCollectingEurekaHttpClient.java:73) ~[eureka-client-1.9.13.jar:1.9.13]

at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) [eureka-client-1.9.13.jar:1.9.13]

at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$1.execute(EurekaHttpClientDecorator.java:59) [eureka-client-1.9.13.jar:1.9.13]

at com.netflix.discovery.shared.transport.decorator.RedirectingEurekaHttpClient.executeOnNewServer(RedirectingEurekaHttpClient.java:118) ~[eureka-client-1.9.13.jar:1.9.13]

at com.netflix.discovery.shared.transport.decorator.RedirectingEurekaHttpClient.execute(RedirectingEurekaHttpClient.java:79) ~[eureka-client-1.9.13.jar:1.9.13]

at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) [eureka-client-1.9.13.jar:1.9.13]

at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$1.execute(EurekaHttpClientDecorator.java:59) [eureka-client-1.9.13.jar:1.9.13]

at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:120) [eureka-client-1.9.13.jar:1.9.13]

at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) [eureka-client-1.9.13.jar:1.9.13]

at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$1.execute(EurekaHttpClientDecorator.java:59) [eureka-client-1.9.13.jar:1.9.13]

at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) [eureka-client-1.9.13.jar:1.9.13]

at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) [eureka-client-1.9.13.jar:1.9.13]

at com.netflix.discovery.DiscoveryClient.register(DiscoveryClient.java:847) [eureka-client-1.9.13.jar:1.9.13]

at com.netflix.discovery.InstanceInfoReplicator.run(InstanceInfoReplicator.java:121) [eureka-client-1.9.13.jar:1.9.13]

at com.netflix.discovery.InstanceInfoReplicator$1.run(InstanceInfoReplicator.java:101) [eureka-client-1.9.13.jar:1.9.13]

at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_231]

at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_231]

at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) [na:1.8.0_231]

at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) [na:1.8.0_231]

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_231]

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_231]

at java.lang.Thread.run(Thread.java:748) [na:1.8.0_231]

Caused by: java.net.ConnectException: Connection refused: connect

at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) ~[na:1.8.0_231]

at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) ~[na:1.8.0_231]

at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) ~[na:1.8.0_231]

at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) ~[na:1.8.0_231]

at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) ~[na:1.8.0_231]

at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) ~[na:1.8.0_231]

at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) ~[na:1.8.0_231]

at java.net.Socket.connect(Socket.java:606) ~[na:1.8.0_231]

at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:121) ~[httpclient-4.5.10.jar:4.5.10]

at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:180) ~[httpclient-4.5.10.jar:4.5.10]

at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:144) ~[httpclient-4.5.10.jar:4.5.10]

at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:134) ~[httpclient-4.5.10.jar:4.5.10]

at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:605) ~[httpclient-4.5.10.jar:4.5.10]

at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:440) ~[httpclient-4.5.10.jar:4.5.10]

at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:835) ~[httpclient-4.5.10.jar:4.5.10]

at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:118) ~[httpclient-4.5.10.jar:4.5.10]

at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56) ~[httpclient-4.5.10.jar:4.5.10]

at com.sun.jersey.client.apache4.ApacheHttpClient4Handler.handle(ApacheHttpClient4Handler.java:173) ~[jersey-apache-client4-1.19.1.jar:1.19.1]

... 30 common frames omitted

2020-07-07 17:04:11.964 WARN 15980 --- [nfoReplicator-0] c.n.d.s.t.d.RetryableEurekaHttpClient : Request execution failed with message: java.net.ConnectException: Connection refused: connect

2020-07-07 17:04:11.967 WARN 15980 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient : DiscoveryClient_CONSUMER-FEIGN/DESKTOP-8NIQN7P:consumer-feign:8083 - registration failed Cannot execute request on any known server

com.netflix.discovery.shared.transport.TransportException: Cannot execute request on any known server

at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:112) ~[eureka-client-1.9.13.jar:1.9.13]

at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) ~[eureka-client-1.9.13.jar:1.9.13]

at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$1.execute(EurekaHttpClientDecorator.java:59) ~[eureka-client-1.9.13.jar:1.9.13]

at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) ~[eureka-client-1.9.13.jar:1.9.13]

at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) ~[eureka-client-1.9.13.jar:1.9.13]

at com.netflix.discovery.DiscoveryClient.register(DiscoveryClient.java:847) ~[eureka-client-1.9.13.jar:1.9.13]