from flask import Flask
from App.Setting import DevConfig
from App.loggingConfig import LoggingConfig
from flask_sqlalchemy import SQLAlchemy

# 初始化SQLAlchemy
db = SQLAlchemy()


def create_app():
    # 初始化 flask
    app = Flask(__name__)

    # 导入配置文件
    app.config.from_object(DevConfig)

    # SQLAlchemy引入app以及配置文件
    db.init_app(app)

    # 初始化 Logging 日志模块
    LoggingConfig()

    # 导入蓝图
    from App.Login import login

    # 引入蓝图
    app.register_blueprint(login)

    return app

from flask_migrate import MigrateCommand, Migrate
from flask_script import Manager
from App import create_app

# 引入表结构
from App.modules import Users,db

app = create_app()
manager = Manager(app)
# Migrate() 需要绑定app 和 db
migrate = Migrate(app, db)
# 子命令  MigrateCommand 包含三个方法 init migrate upgrade
manager.add_command(‘db‘, MigrateCommand)

if __name__ == ‘__main__‘:
    manager.run()

‘‘‘
启动项目前创建数据库：
python manager.py db init
python manager.py db migrate
python manager.py db upgrade

启动项目
python manager.py runserver
‘‘‘