通过用户模型,对数据库进行增删改查操作
from flask import Flask from flask_sqlalchemy import SQLAlchemy import config app=Flask(__name__) app.config.from_object(config) db=SQLAlchemy(app) class User(db.Model): __tablename__='user' id=db.Column(db.Integer,primary_key=TabError,autoincrement=True) username=db.Column(db.String(20),nullable=False) password=db.Column(db.String(20),nullable=False) #数据添加 user=User(username='ma',password='gg') db.session.add(user) db.session.commit() db.create_all() #数据更新 user = User.query.filter(User.username=='hh').first() user.password='gg' db.session.commit() # 数据查询 user = User.query.filter(User.username=='ma').first() print(user.username,user.password) # 数据删除 user = User.query.filter(User.username=='ma').first() db.session.delete(user) db.session.commit() @app.route('/') def hello_world(): return 'hello World' if __name__ == '__main__': app.run()