pycharm中怎么点开断点的错误地方code吗 图中红色部分

说错了是没有引入signals.py里面的login_signal信号，是因为信号是全局对象吗

我看app.py没有引入signals.py，是因为信号是全局对象吗

老师，host里ip是30，但是nginx配置的是31，他是怎么进行访问的，这个过程还是不太明白？

访问后查看交换器下面没绑定东西，后台一直说 ERROR 也没报错

这个插件下载下载时没找到要怎么处理

lao老师，是不是网站出现问题不能访问了？？但是我用浏览器可以访问啊

老师为啥输入错误后，重新输入范围内数值后不执行语句了呢？

电商项目相关：

响应的EgoResult对象，为什么响应的对象名字是object，如何修改成data.

这是控制器，通过查询到id后，返回一个itemDesc对象，然后将这个对象通过业务层放进EgoResult的成员变量叫data的Object对象中之后返回给页面

页面需要

[root@iz2zeek5f6r156rkimkjvbz charsets]# docker ps
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES
[root@iz2zeek5f6r156rkimkjvbz charsets]# docker logs mysql
2021-11-13 14:05:42+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 5.7.36-1debian10 started.
2021-11-13 14:05:42+00:00 [ERROR] [Entrypoint]: mysqld failed while attempting to check config
    command was: mysqld --character-set-server=utf8mb4--collation-server=utf8mb4_unicode_ci --verbose --help --log-bin-index=/tmp/tmp.Q6mU6pM1k0
    mysqld: Character set 'utf8mb4--collation-server=utf8mb4_unicode_ci' is not a compiled character set and is not specified in the '/usr/share/mysql/charsets/Index.xml' file
mysqld: Character set 'utf8mb4--collation-server=utf8mb4_unicode_ci' is not a compiled character set and is not specified in the '/usr/share/mysql/charsets/Index.xml' file
2021-11-13 14:32:03+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 5.7.36-1debian10 started.
2021-11-13 14:32:03+00:00 [ERROR] [Entrypoint]: mysqld failed while attempting to check config
    command was: mysqld --character-set-server=utf8mb4--collation-server=utf8mb4_unicode_ci --verbose --help --log-bin-index=/tmp/tmp.N4ECJMoqQu
    mysqld: Character set 'utf8mb4--collation-server=utf8mb4_unicode_ci' is not a compiled character set and is not specified in the '/usr/share/mysql/charsets/Index.xml' file
mysqld: Character set 'utf8mb4--collation-server=utf8mb4_unicode_ci' is not a compiled character set and is not specified in the '/usr/share/mysql/charsets/Index.xml' file

docker安装完MySQL以后出现的错误信息

[root@iz2zeek5f6r156rkimkjvbz charsets]# docker ps
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES
[root@iz2zeek5f6r156rkimkjvbz charsets]# docker logs mysql
2021-11-13 14:05:42+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 5.7.36-1debian10 started.
2021-11-13 14:05:42+00:00 [ERROR] [Entrypoint]: mysqld failed while attempting to check config
    command was: mysqld --character-set-server=utf8mb4--collation-server=utf8mb4_unicode_ci --verbose --help --log-bin-index=/tmp/tmp.Q6mU6pM1k0
    mysqld: Character set 'utf8mb4--collation-server=utf8mb4_unicode_ci' is not a compiled character set and is not specified in the '/usr/share/mysql/charsets/Index.xml' file
mysqld: Character set 'utf8mb4--collation-server=utf8mb4_unicode_ci' is not a compiled character set and is not specified in the '/usr/share/mysql/charsets/Index.xml' file
2021-11-13 14:32:03+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 5.7.36-1debian10 started.
2021-11-13 14:32:03+00:00 [ERROR] [Entrypoint]: mysqld failed while attempting to check config
    command was: mysqld --character-set-server=utf8mb4--collation-server=utf8mb4_unicode_ci --verbose --help --log-bin-index=/tmp/tmp.N4ECJMoqQu
    mysqld: Character set 'utf8mb4--collation-server=utf8mb4_unicode_ci' is not a compiled character set and is not specified in the '/usr/share/mysql/charsets/Index.xml' file
mysqld: Character set 'utf8mb4--collation-server=utf8mb4_unicode_ci' is not a compiled character set and is not specified in the '/usr/share/mysql/charsets/Index.xml' file

老师，CompareTo自身实现比较规则，怎么比较的

老师，为什么我这边不能导入包呢，目录结构和代码都是跟视频相同啊

老师，为什么我这个列没合并起来

from flask import Flask,session,g
import os
#钩子函数
app = Flask(__name__)
app.config['SECRET_KEY']=os.urandom(24)  #加盐  混淆原数据的作用/不加盐就会报错

@app.route('/')
def hello_world():
    session["uname"]="momo"
    return 'Hello World!'
#项目部署好以后，第一次请求之前执行某些特殊功能(在执行前钩子钩了进来)
# @app.before_first_request
# def first_request():
#     print("第一次请求前执行之前执行")

#每次请求前执行
@app.before_request
# print('在视图函数执行之前执行的钩子函数')
# 场景：若用户已经登录了，验证时把用户名放入session中,之后取出来，
# 放入钩子函数，以后访问的视图函数中可直接取出来使用
def before_request():
    print('在视图函数执行之前执行的钩子函数')
    uname = session.get('uname')
    print(uname)        #第一次请求前是没有session的，因为没有设置session的有效期
    if uname:
        g.user = uname
@app.route('/li')
def mylist():
    print("mylist")
    # print("直接取出",g.user)
    if hasattr(g,"user"):       #判断g中有无user属性
        print("条件取出", g.user)
    return "hello world "

if __name__ == '__main__':
    app.run()

为什么只做了一次访问，before_request()函数会被执行两次