About char b prefix in Python3.4.1 client connect to redis

Question

I am run into trouble .My code below.But I do not know why there is a char 'b' before output string "Hello Python".

>>> import redis >>> redisClient = redis.StrictRedis(host='192.168.3.88',port=6379) >>> redisClient.set('test_redis', 'Hello Python') True >>> value = redisClient.get('test_redis') >>> print(value) b'Hello Python' //why char 'b' output? 

Answer 1

It means it's a byte string

You can use:

redis.StrictRedis(host="localhost", port=6379, charset="utf-8", decode_responses=True) 

using decode_responses=True to make a unicode string.

Answer 2

b'Hello Python' is a byte string - redis will auto-encode a unicode string for you on the way in, but it's your job to decode it on the way out.

Better to explicitly encode and decode:

>>> redisClient.set('test_redis', 'Hello Python'.encode('utf-8')) >>> redisClient.get('test_redis').decode('utf-8') 'Hello Python'