text: import os
  
  
  class Config:
      SECRET_KEY = os.urandom(32)
      SQLALCHEMY_TRACK_MODIFICATIONS = False
      SQLALCHEMY_DATABASE_URI = (
          os.environ.get("SQLALCHEMY_DATABASE_URI")
          or "postgresql://fyyur:pass@localhost:5432/fyyur"
      )
      POPULATE_DB = os.environ.get("POPULATE_DB") or True
      TESTING = os.environ.get("TESTING") or False
      DEBUG = os.environ.get("DEBUG") or True
      basedir = os.path.abspath(os.path.dirname(__file__))
  
      @staticmethod
      def init_app(app):
          pass
  
  
  class DevelopmentConfig(Config):
      DEBUG = True
      TESTING = False
  
  
  class TestingConfig(Config):
      pass
  
  
  class ProductionConfig(Config):
      pass
  
  
  config = {
      "development": DevelopmentConfig,
      "testing": TestingConfig,
      "production": ProductionConfig,
  }
  