text: class Config(object):
      DEBUG = False
      TESTING = False
      SQLALCHEMY_TRACK_MODIFICATIONS = False
  
  
  class ProductionConfig(Config):
      SQLALCHEMY_DATABASE_URI = "sqlite://"
  
  
  class DevelopmentConfig(Config):
      DEBUG = True
      SQLALCHEMY_DATABASE_URI = "postgres://localhost/py_sweater_express_dev"
      SQLALCHEMY_ECHO = False
  
  
  class TestingConfig(Config):
      TESTING = True
      SQLALCHEMY_DATABASE_URI = "postgres://localhost/py_sweater_express_test"
      SQLALCHEMY_ECHO = False
  