Re-establish a redis pubsub connection after losing it

redis_pubsub.py

import time
from redis import StrictRedis, ConnectionError

channels = ['test']
redis = StrictRedis()
pubsub = redis.pubsub()
pubsub.subscribe(channels)
while True:
    try:
        for item in pubsub.listen():
            print(item)
    except ConnectionError:
        while True:
            print('lost connection; trying to reconnect...')
            try:
                redis.ping()
            except ConnectionError:
                time.sleep(10)
            else:
                pubsub.subscribe(channels)
                break