redis数据库迁移

import redis
src_redis=redis.Redis(host='127.0.0.1',port=6379,password='123456',db=2)
target_redis=redis.Redis(host='127.0.0.1',port=6379,password='123456',db=3 )
src_redis_keys = src_redis.keys()
for key in src_redis_keys:
    if src_redis.type(key)==b'string':
        target_redis.set(key,src_redis.get(key))
    else:
        date_dict = src_redis.hgetall(key)
        for k,v in date_dict.items():
            target_redis.hset(key,k,v)