old_contents: import bcrypt
  from grum import db
  
  
  class User(db.Model):
      id = db.Column(db.Integer, primary_key=True)
      username = db.Column(db.String(64), unique=True)
      password = db.Column(db.String(128))
      display_name = db.Column(db.String(128))
  
      def __init__(self, username=None, password=None):
          if username:
              self.username = username
          if password:
              self.set_password(password)
  
      def set_password(self, plaintext_password):
          self.password = bcrypt.hashpw(plaintext_password.encode('utf-8'), bcrypt.gensalt())
  
      def validate_password(self, plaintext_password):
          hashed = bcrypt.hashpw(plaintext_password.encode('utf-8'), bytes(self.password.encode('utf-8')))
          return hashed == bytes(self.password.encode('utf-8'))
  
  
  class EmailAccount(db.Model):
      address = db.Column(db.String(128), primary_key=True)
      owner_id = db.Column(db.Integer, db.ForeignKey('user.id'))
      mg_api = db.Column(db.String(64))
new_contents: import bcrypt
  from grum import db
  
  
  class User(db.Model):
      id = db.Column(db.Integer, primary_key=True)
      username = db.Column(db.String(64), unique=True)
      password = db.Column(db.String(128))
      display_name = db.Column(db.String(128))
  
      def __init__(self, username=None, display_name=None, password=None):
          if username:
              self.username = username
          if display_name:
              self.display_name = display_name
          if password:
              self.set_password(password)
  
      def set_password(self, plaintext_password):
          self.password = bcrypt.hashpw(plaintext_password.encode('utf-8'), bcrypt.gensalt())
  
      def validate_password(self, plaintext_password):
          hashed = bcrypt.hashpw(plaintext_password.encode('utf-8'), bytes(self.password.encode('utf-8')))
          return hashed == bytes(self.password.encode('utf-8'))
  
  
  class EmailAccount(db.Model):
      address = db.Column(db.String(128), primary_key=True)
      owner_id = db.Column(db.Integer, db.ForeignKey('user.id'))
      mg_api = db.Column(db.String(64))
subject: Add display name to the constructor for User