11.15

from flask import Flask
from flask_sqlalchemy import SQLAlchemy
import config

app = Flask(__name__)
app.config.from_object(config)


class SQLALchemy(object):
    pass


db=SQLALchemy(app)

class User(db.Model):
    _tablename_ = ‘user‘
    id = db.Column(db.Integer,primary_key=True,autoincrement=True)
    username = db.Column(db.String(20),nullable=False)
    password = db.Column(db.String(20), nullable=False)
    nickname = db.Column(db.String(20))
#修改
user = User.query.filter(User.username == ‘mis1114‘).first()
user.password = ‘234567‘
print(user.username,user.password)
db.session.commit()
#删除
user = User.query.filter(User.username == ‘chen1114‘).first()
print(user.username,user.password)
db.session.delete(user)
db.session.commit()
# 添加
user = User(username = ‘mis1114‘,password = ‘mis1114‘)
db.session.add(user)
db.session.commit()
db.creat_all()
user = User.query.filter(User.username==‘mia1114‘).first()
user.password = ‘111111‘
db.session.commit()

@app.route(‘/‘)
def hello_world():
    return ‘Hello World!‘


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