#?-*-?coding:utf-8?-*- from?flask?import?Flask from?flask_sqlalchemy?import?SQLAlchemy app?=?Flask(__name__) app.config['SQLALCHEMY_DATABASE_URI']?=?'mysql+pymysql://root:123456@localhost:3306/flask_sql' app.config['SQLALCHEMY_TRACK_MODIFICATIONS']?=?False db?=?SQLAlchemy(app) #數(shù)據(jù)庫(kù)模型 class?Role(db.Model): ????__tablename__?=?'roles' ????id?=?db.Column(db.Integer,?primary_key=True) ????name?=?db.Column(db.String(16),?unique?=?True) class?User(db.Model): ????__tablename__?=?'users' ????id?=?db.Column(db.Integer,?primary_key=True) ????name?=?db.Column(db.String(16),?unique=True) ????role_id?=?db.Column(db.Integer,?db.ForeignKey('roles.id')) @app.route('/') def?hello_world(): ????return?'Hello?World!' if?__name__?==?'__main__': ????db.create_all() ????app.run(debug?=?True)pymysql和sqlAlchemy驅(qū)動(dòng)都裝上了，驅(qū)動(dòng)也都也導(dǎo)入了項(xiàng)目里，可是運(yùn)行后數(shù)據(jù)庫(kù)里的flask_sql沒有任何新數(shù)據(jù)顯示，不知道怎么回事，運(yùn)行后也沒有報(bào)錯(cuò)。