__init__.py

import redis


class RedisStorage(object):
    _redis_pool = {}

    @classmethod
    def setup_redis_pool(cls, redis_pool):
        for k, v in redis_pool.iteritems():
            cls._redis_pool[k] = redis.Redis(v[0], v[1])

    def _get_db(self, db_name):
        return self._redis_pool.get(db_name, None)

comment.py

class CommentRedis(RedisStorage):
    def add_comment(self, checkin_id, comment_id, comment_data):
        r_client = self._get_db("COMMENT")
        # u can use redis now