text: from app import db
  
  
  class User(db.Model):
      __tablename__ = 'user'
      username = db.Column(db.String(80), primary_key=True)
      email = db.Column(db.String(30), nullable=False)
      password = db.Column(db.String(80), nullable=False)
  
      def __repr__(self):
          return f'user: {self.username}'
  