pre_init
django.db.models.signals.pre_init
每当你实例化一个 Django 模型时，这个信号都会在模型的 __init__() 方法的开头发出。

用此信号发送的参数：

sender
刚刚创建了一个实例的模型类。
args
传递给 __init__() 的位置参数列表。
kwargs
传递给 __init__() 的关键字参数字典。

post_init
django.db.models.signals.post_init
和 pre_init 一样，但这个是在 __init__() 

# 安装channels
python -m pip install -U channels["daphne"]
# 插件redis用于实现组之间群发消息的
python -m pip install channels_redis

# 1. 添加app
INSTALLED_APPS = (
    "daphne",
    "django.contrib.auth",
    "django.contrib.contenttypes",
 

OpenSSL> genrsa -out app_private_key.pem   2048  #生成私钥
OpenSSL> pkcs8 -topk8 -inform PEM -in app_private_key.pem -outform PEM -nocrypt -out app_private_key_pkcs8.pem #Java开发者需要将私钥转换成PKCS8格式
OpenSSL> rsa -in app_private_key.pem -pu

from flask_sqlalchemy import SQLAlchemy
from flask_sqlalchemy.query import Query # baseQuery
from flask_marshmallow import Marshmallow
from flask_migrate import Migrate
from flask import Flask
import click

db = SQLAlchemy()
ma = Marshmallow()
migrate = Migrate()

def init_datab

from flask_login import UserMixin
from werkzeug.security import generate_password_hash, check_password_hash
from ..extensions import db
import datetime

class User(db.Model, UserMixin):
    __tablename__ = 'user'
    id = db.Column(db.Integer, primary_key=True, autoincrement=True, comment=&#

# coding=utf-8
from flask import request, jsonify, abort
from wtforms import Form
from ...models import User
from ...extensions import db
from ...common.utils.jwt_token import jwt_filter_user
from typing import Literal
from ...common.exception import error_response
# request data 基础验证器


class Reque

import jwt
import datetime
from flask import request, g
from .http import fail_response
from flask import has_request_context
from functools import wraps
from ...models import User
import re
from typing import Union


JWT_CONFIG: dict[str, Union[str, datetime.timedelta]] = {
    'ACCESS_TIMEOUT&

import os
from flask import Flask
from flask_cors import CORS


def create_app(config=None) -> Flask:
    print('创建App')
    # create and configure the app
    app = Flask(__name__, instance_relative_config=True)

    app.config.from_mapping(
        SECRET_KEY='dev',
        # DA

{
    "python.linting.mypyEnabled": true
}