text: 
  import os
  
  from .default import DefaultConfig
  
  
  class DevelopmentConfig(DefaultConfig):
      """
      Development configuration
      """
  
      DEBUG = True
      ASSETS_DEBUG = True
  
      # SQLAlchemy configuration
      SQLALCHEMY_DATABASE_URI = 'sqlite:///' + os.path.join(DefaultConfig.BASE_DIR, 'instance', 'app.db')
      DATABASE_CONNECT_OPTIONS = {}
      SQLALCHEMY_ECHO = False
      SQLALCHEMY_TRACK_MODIFICATIONS = True
  