老师建议下次录视频的时候把鼠标光标显示出来，不然看不到你点的哪里

问题：按照文档和视频操作，集群里就是不显示，一直报连接失败？

操作系统版本：

docker镜像及运行进程：

相关环境：JDK1.8 、防火墙已关闭

为啥我的视频显示的才是8分钟的啊，咋有同学的16分钟的呢，是要怎么更新么？

老师,我也是继承报错.

用了视频下面一位同学的留言方法,加了一句是可以解决的.

但是这样好像治标不治本?请问是什么原因导致的啊

class Student:
    company="LJCS" #类属性
    count=0 #类属性

    def __init__(self,name,score):
        self.name=name  #实例属性
        self.score=score #实例属性
        self.count=self.count+1  #计数器 创建一个对象加1
    def say_score(self):
        print("我的公司名称是:{0}".format(self.company))
        print("{0}的分数是：{1}".format(self.name,self.score))
        print("一共创建了{0}个对象".format(self.count))

s1=Student("姬昊余",80)
s2=Student("吕倩倩",100)
s1.say_score()

老师为什么我用self.count 运行之后显示只创建一个对象  但是我用Student.count就显示创建了两个对象 

(func):
  (a):
    func(a) + funcin
(a):
  a

func1()

老师这段代码，为什么用print()才会有结果，直接调用为什么不显示呢，内部函数和被修饰的函数不都有返回值么。

老师，出现了初始化异常，我也看了你推荐的连接，但是没找到问题。

帮我看看我的项目

sum = oddSum = evenSum = b = (b<=){
    sum +=bb++(b%==){
        evenSum +=b}{
        oddSum +=b}

这段代码，偶数和结果是2550，奇数和结果是2601，哪里出问题了？

代码:

alter table sxt_student change name stu_name vachar(30);

运行结果:

老师请问一下，这个错误的原因是什么?

老师，这节课的两个进程一个是开始执行就有的进程，还有一个是Process产生的进程么？

取余、求分子分母、三角函数的那些是怎么运算的啊

没有明白；去哪下载API文档；这章节太走流程了

<!--主体开始-->
<div class="cantent">
    <div class="wrap">
        <!--手机开始-->
        <div class="phone">
            <h3 class="title">手机</h3>
            <div class="phone-box">
                <div class="phone-box-left">
                    <a href="#">
                        <img src="image/cb1bd61ad71c45a4f67f09b075463944.jpeg" alt=""/>
                    </a>
                </div>
                <div class="phone-box-right">
                    <div class="items1">
                        <a href="#">
                            <img src="https://cdn.cnbj1.fds.api.mi-img.com/mi-mall/b3553083a4975325eab6470d94465548.jpg?thumb=1&w=120&h=120" alt=""/>
                            <p class="name2">小米10s</p>
                            <p class="name3">骁龙870 | 对称式双扬立体声</p>
                            <p class="name4">3299元起</p>
                        </a>
                    </div>
                    <div class="items1">
                        <a href="#">
                            <img src="https://cdn.cnbj1.fds.api.mi-img.com/mi-mall/b3553083a4975325eab6470d94465548.jpg?thumb=1&w=120&h=120" alt=""/>
                            <p class="name2">小米10s</p>
                            <p class="name3">骁龙870 | 对称式双扬立体声</p>
                            <p class="name4">3299元起</p>
                        </a>
                    </div>
                    <div class="items1">
                        <a href="#">
                            <img src="https://cdn.cnbj1.fds.api.mi-img.com/mi-mall/b3553083a4975325eab6470d94465548.jpg?thumb=1&w=120&h=120" alt=""/>
                            <p class="name2">小米10s</p>
                            <p class="name3">骁龙870 | 对称式双扬立体声</p>
                            <p class="name4">3299元起</p>
                        </a>
                    </div>
                    <div class="items1">
                        <a href="#">
                            <img src="https://cdn.cnbj1.fds.api.mi-img.com/mi-mall/b3553083a4975325eab6470d94465548.jpg?thumb=1&w=120&h=120" alt=""/>
                            <p class="name2">小米10s</p>
                            <p class="name3">骁龙870 | 对称式双扬立体声</p>
                            <p class="name4">3299元起</p>
                        </a>
                    </div>
                    <div class="items1">
                        <a href="#">
                            <img src="https://cdn.cnbj1.fds.api.mi-img.com/mi-mall/b3553083a4975325eab6470d94465548.jpg?thumb=1&w=120&h=120" alt=""/>
                            <p class="name2">小米10s</p>
                            <p class="name3">骁龙870 | 对称式双扬立体声</p>
                            <p class="name4">3299元起</p>
                        </a>
                    </div>
                    <div class="items1">
                        <a href="#">
                            <img src="https://cdn.cnbj1.fds.api.mi-img.com/mi-mall/b3553083a4975325eab6470d94465548.jpg?thumb=1&w=120&h=120" alt=""/>
                            <p class="name2">小米10s</p>
                            <p class="name3">骁龙870 | 对称式双扬立体声</p>
                            <p class="name4">3299元起</p>
                        </a>
                    </div>
                    <div class="items1">
                        <a href="#">
                            <img src="https://cdn.cnbj1.fds.api.mi-img.com/mi-mall/b3553083a4975325eab6470d94465548.jpg?thumb=1&w=120&h=120" alt=""/>
                            <p class="name2">小米10s</p>
                            <p class="name3">骁龙870 | 对称式双扬立体声</p>
                            <p class="name4">3299元起</p>
                        </a>
                    </div>
                    <div class="items1">
                        <a href="#">
                            <img src="https://cdn.cnbj1.fds.api.mi-img.com/mi-mall/b3553083a4975325eab6470d94465548.jpg?thumb=1&w=120&h=120" alt=""/>
                            <p class="name2">小米10s</p>
                            <p class="name3">骁龙870 | 对称式双扬立体声</p>
                            <p class="name4">3299元起</p>
                        </a>
                    </div>
                </div>
            </div>
            <div class="big-img">
                <a href="#">
                    <img src="https://cdn.cnbj1.fds.api.mi-img.com/mi-mall/41d16e66381cfeda7b6b39ab67678d5e.jpg?thumb=1&w=736&h=72" alt=""/>
                </a>
            </div>
        </div>
        <!--手机结束-->
    </div>
</div>
<!--主体结束-->


css
/*主体开始*/
.cantent{
    width: 100%;
    /*自动找高*/
    overflow: hidden;
    padding: 4px 0 12px;
    background-color: #f5f5f5;
}
.title{
    text-align: left;
    color: #333;
    font-size: 22px;
    font-weight: 200;
    line-height: 58px;
}
.phone-box{
    width: 100%;
    height: 614px;
}
.phone-box-left{
    width: 234px;
    height: 614px;
    float: left;
    transition: all .2s linear;
    box-sizing: border-box;
}
.phone-box-right{
    width: 992px;
    height: 614px;
    /*background-color: deepskyblue;*/
    float: left;


}
.phone-box-left img{
    width: 100%;
    height: 100%;
}
.items1{
    width: 234px;
    height: 282px;
    padding: 20px 0;
    margin: 0 0 14px 14px;
    background-color: #fff;
    float: left;
    transition: all .2s linear;
    /*box-sizing: border-box;*/
}
.items1 img{
    width: 160px;
    height: 160px;
    margin-bottom: 18px; ;
}
.name2{
    width: 214px;
    height: 20px;
    color: #333;
    font-size: 14px;
    line-height: 21px;
    margin: 0 10px 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.name3{
    width: 214px;
    height: 18px;
    font-size: 12px;
    color: #b0b0b0;
    margin: 0 10px 10px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.name4{
    width: 214px;
    height: 21px;
    color: #ff6700;
    margin: 0 10px 14px;
    font-size: 14px;
}
.phone-box-left:hover{
    box-shadow: 0 15px 30px rgba(0,0,0,.1);
    transform: translate(0,-2px);
}
.items1:hover{
    box-shadow: 0 15px 30px rgba(0,0,0,.1);
    transform: translate(0,-2px);
}
.big-img{
    width: 100%;
    height: 120px;

 }
.big-img img{
    width: 1226px;
    height: 120px;
    margin: 22px 0;
}

老师 我已经遇见过好几次这种情况了，代码没问题，但就是不显示，去浏览器检索了也有，但就是显示不出来，空白一片，这到底是bug？还是什么问题，求老师解答下！！感谢