老师我一进行上传就报这个错误是啥原因导致的，我实在找不到了

class Test(Frame):
    def __init__(self, master=None):  # 声明变量
        super().__init__(master) # super代表的是父类的定义而非对象
        self.master = master
        self.pack()
        self.create()

    def create(self):   # 创建登录界面的组件
        self.label01 = Label(self, text="用户名")
        self.label01.pack()
        # StringVar变量绑定到指定的组件。
        # StringVar变量的值发生变化，组件内容也发生变化。
        # 组件内容发生变化，StringVar变量的值也发生变化。
        v1 = StringVar()
        self.entry_1 = Entry(self, textvariable=v1)
        self.entry_1.pack()
        v1.set("admin")
        print(v1.get()); print(self.entry_1.get())

        # 创建密码框

        v2 = StringVar()
        self.label_2 =Label(self, text="密码")
        self.label_2.pack()

        self.entry_2 = Entry(self, textvariable=v2, show="1")
        self.entry_2.pack()

        print(v1.get()); print(self.entry_1.get())

        self.but_1 = Button(self, text="登录", command=self.login)
        self.but_1.pack()

    def login(self):
        username = self.entry_1.get()
        pwd = self.entry_2.get()
        print("去数据库对比用户名和密码")
        print("用户名{}".format(username)); print("密码{}".format(pwd))
        if username =="wankan" and pwd =="123456":
            messagebox.showinfo("登录成功", "欢迎学习")
            Button(username, text="确定", command=self.destroy).pack()
        else:
            messagebox.showinfo("登录失败", "请重新登录")

if __name__ == "__main__":
    root = Tk()
    App = Test(master=root)
    root.mainloop()

老师我这里想让他输入正确的账号密码后安确定就可以退出，然后做了一个按钮，让他确认退出，怎么还报错了？是我的方法不对吗？

老师请问这为什么没有打开到指定的“d”盘目录？

1. 子类继承报错，网上看了很多，试了下面同学的方法，也都没得到解决。。。

前面不是提过Integer和String都有自身的compareTo方法嘛，那这里为什么不能直接使用Integer自身的compareTo方法来比较年龄的大小呢？

1.     x > 0?1:(x==0?0:-1);

   
   

2. 

这两个为什么是不按照运算符优先级运算的?

当出现短路与，短路非时都要先判断再进行计算吗？短路与，短路非任何情况下都是作为判断条件的嘛

当有判断条件出现时，都会先判断再进行计算吗？

pycharm环境下卸载后安装就会提示错误：

PS D:\scrapytest> pip install cryptography==36.0.2

Collecting cryptography==36.0.2

  Using cached cryptography-36.0.2-cp36-abi3-win_amd64.whl (2.2 MB)

Requirement already satisfied: cffi>=1.12 in d:\scrapytest\venv\lib\site-packages (from cryptography==36.0.2) (1.15.1)

Requirement already satisfied: pycparser in d:\scrapytest\venv\lib\site-packages (from cffi>=1.12->cryptography==36.0.2) (2.21)

Installing collected packages: cryptography

ERROR: pip's dependency resolver does not currently take into account all the packages that are installed. This behaviour is the source of the following dependency

 conflicts.

pyopenssl 22.1.0 requires cryptography<39,>=38.0.0, but you have cryptography 36.0.2 which is incompatible.

Successfully installed cryptography-36.0.2

虽然提示完成安装但运行起来提示错误：

Traceback (most recent call last):

  File "D:/scrapytest/webtest/scrapy03/scrapy03/begin_脚本启动scrapy.py", line 10, in <module>

    from scrapy.cmdline import execute

  File "D:\scrapytest\venv\lib\site-packages\scrapy\__init__.py", line 12, in <module>

    from scrapy.spiders import Spider

  File "D:\scrapytest\venv\lib\site-packages\scrapy\spiders\__init__.py", line 93, in <module>

    from scrapy.spiders.crawl import CrawlSpider, Rule

  File "D:\scrapytest\venv\lib\site-packages\scrapy\spiders\crawl.py", line 15, in <module>

    from scrapy.utils.spider import iterate_spider_output

  File "D:\scrapytest\venv\lib\site-packages\scrapy\utils\spider.py", line 5, in <module>

    from scrapy.utils.defer import deferred_from_coro

  File "D:\scrapytest\venv\lib\site-packages\scrapy\utils\defer.py", line 29, in <module>

    from scrapy.utils.reactor import is_asyncio_reactor_installed, get_asyncio_event_loop_policy

  File "D:\scrapytest\venv\lib\site-packages\scrapy\utils\reactor.py", line 5, in <module>

    from twisted.internet import asyncioreactor, error

  File "D:\scrapytest\venv\lib\site-packages\twisted\internet\asyncioreactor.py", line 19, in <module>

    from twisted.internet.posixbase import (

  File "D:\scrapytest\venv\lib\site-packages\twisted\internet\posixbase.py", line 16, in <module>

    from twisted.internet import error, tcp, udp

  File "D:\scrapytest\venv\lib\site-packages\twisted\internet\tcp.py", line 38, in <module>

    from twisted.internet._newtls import (

  File "D:\scrapytest\venv\lib\site-packages\twisted\internet\_newtls.py", line 18, in <module>

    from twisted.protocols.tls import TLSMemoryBIOFactory, TLSMemoryBIOProtocol

  File "D:\scrapytest\venv\lib\site-packages\twisted\protocols\tls.py", line 42, in <module>

    from OpenSSL.SSL import Connection, Error, SysCallError, WantReadError, ZeroReturnError

  File "D:\scrapytest\venv\lib\site-packages\OpenSSL\__init__.py", line 8, in <module>

    from OpenSSL import SSL, crypto

  File "D:\scrapytest\venv\lib\site-packages\OpenSSL\SSL.py", line 19, in <module>

    from OpenSSL.crypto import (

  File "D:\scrapytest\venv\lib\site-packages\OpenSSL\crypto.py", line 3224, in <module>

    utils.deprecated(

TypeError: deprecated() got an unexpected keyword argument 'name'

请问这个该怎么解决？

出现这个是怎么回事啊、、、、、、、、、、、、

@Repository和@Mapper这两个注解没区别吗？？？

老师，为什么my_tank.live就不行呀?报的的这个错误什么意思

为什么项目启动后，这几句信息为什么总是重复刷新呢，一直跳，正常吗？操作倒一切正常？

老师你好，接下来要怎样做才能实现将注册的信息写入  loginuserinfo.sql 数据库呀：

//register.js

(function() {

    $('.registBtn').click(function() {

        //获取相关元素
        var regist_username = $('.regist-username').val();
        var regist_password = $('.regist-password').val();
        var regist_password_again = $('.regist-password-again').val();

        //判空操作
        //trim() 去掉字符串两端的多余的空格
        if (regist_username.trim().length == 0 || regist_password.trim().length == 0 || regist_password_again.trim().length == 0) {
            alert('信息不能为空，请确认！');
            return;
        } else if (regist_password != regist_password_again) {
            alert('两次密码不一致！');
            return;
        }

        //发送Ajax请求
        $.ajax({
            type: 'post',
            url: './php/register.php',
            dataType: 'json',
            data: { //发送的数据 uname、upass用来提交到后台
                reuname: regist_username,
                repassword: regist_password,
                repassworda: regist_password_again
            },
            success: function(res) { //回调函数

                switch (res.infoCode) {
                    case 0:
                        {
                            alert('恭喜你，注册成功！请登录!');

                            //注册成功后自动跳转到登录
                            location = '../php/loginFile.php';
                        }
                        break;
                    case 1:
                        {
                            alert('两次密码不一致！');
                        }
                        break;
                    case 2:
                        {
                            alert('登录失败！网络连接失败');
                        }
                        break;
                    case 3:
                        {
                            alert('登录失败！用户名已存在');
                        }
                        break;
                    default:
                        {
                            alert('未知错误');
                        }
                }
            }
        })

        //发送请求完毕后初始化输入框
        $('.regist-username').val();
        $('.regist-password').val();
        $('.regist-password-again').val();

    });
}());

//register.php

<?php
//获取用户从前端发来的数据
$username = $_POST['reuname'];
$password = $_POST['repassword'];
$passworda = $_POST['repassworda'];

$success = array('msg'=>'ok');

//连接数据库
$con = mysqli_connect('localhost','root','123456','lanmeipai');

if($con){
//修改字符集
mysqli_query($con,'set names utf8');
mysqli_query($con,'set character_set_client utf8');
mysqli_query($con,'set character_set_results utf8');

//查询数据并连接
$sql = 'select * from loginuserinfo where 1';
$result=$con->query($sql);


if(){

for(){
  
}

//判断用户传来的用户名和密码是否在数据库里有对应信息
$flag=false;//标示符，默认注册失败


//当循环结束后，判断$flag的值
if(!$flag){
  $success['infoCode']=1;
}
}else{
  $success['infoCode']=3;
}
}else{
  $success['infoCode']=2;//0代表注册成功，1代表注册失败，2代表数据库连接失败，3代表用户名已存在
}

echo json_encode($success);
?>

老师这个打个比方：

  p.getD(orign);

这个方法在调用的时候电脑会给他在栈上分配空间吗？构造对象是不是通过构造方法来构造？

老师，请问为什么我新建保存的源文件打不开呢，是保存的位置不对吗