old_contents: # -*- coding: utf-8 -*-
  """
  rio.core
  ~~~~~~~~~
  
  Definition of rio core object.
  """
  
  import logging
  
  from flask_sqlalchemy import SQLAlchemy
  from flask_celery import Celery
  from flask_migrate import Migrate
  from raven.contrib.flask import Sentry
  from rio.exts.flask_redis_cluster import RedisCluster
  from rio.exts.flask_redis_cache import RedisCache
  
  #: db: SQLAlchemy instance for database manipulation.
  db = SQLAlchemy()
  
  #: celery: Celery instance for job queue manipulation.
  celery = Celery()
  
  #: redis
  redis = RedisCluster()
  
  #: redis cache
  cache = RedisCache()
  
  #: logger instance
  logger = logging.getLogger('rio')
  
  #: sentry: Sentry Official Client
  sentry = Sentry()
  
  #: migrate: Database migration object
  migrate = Migrate()
  
new_contents: # -*- coding: utf-8 -*-
  """
  rio.core
  ~~~~~~~~~
  
  Definition of rio core object.
  """
  
  import logging
  
  from flask_sqlalchemy import SQLAlchemy
  from flask_celery import Celery
  from flask_migrate import Migrate
  from raven.contrib.flask import Sentry
  from rio.exts.flask_redis_cluster import RedisCluster
  from rio.exts.flask_cache import Cache
  
  #: db: SQLAlchemy instance for database manipulation.
  db = SQLAlchemy()
  
  #: celery: Celery instance for job queue manipulation.
  celery = Celery()
  
  #: redis
  redis = RedisCluster()
  
  #: redis cache
  cache = Cache()
  
  #: logger instance
  logger = logging.getLogger('rio')
  
  #: sentry: Sentry Official Client
  sentry = Sentry()
  
  #: migrate: Database migration object
  migrate = Migrate()
  
subject: fix cache import.