new_contents: from flask_script import Manager
  from flask_migrate import Migrate, MigrateCommand
  
  from app import db, create_app
  from app.models import User, BucketList, Item
  
  app = create_app("development")
  manager = Manager(app)
  migrate = Migrate(app, db)
  
  @manager.command
  def createdb():
      db.create_all()
      print("database tables created successfully")
  
  @manager.command
  def dropdb():
      db.drop_all()
  
  manager.add_command('db', MigrateCommand)
  
  if __name__ == "__main__":
      manager.run()
  
subject: Add database migrations and creation script