import redis
pool = redis.ConnectionPool(host='localhost', port=6379,encoding="UTF-8",decode_responses=True)
r = redis.Redis(connection_pool=pool)
result = r.keys("*")
#遍历所有元素
for res in result:
print(res)
#查看长度
print(len(result))
原文：https://www.cnblogs.com/hankleo/p/11751693.html