初试redis
import redis
def test_redis():
pool = redis.ConnectionPool(host='127.0.0.1', port=6379, password='test123',db=10)
r = redis.Redis(connection_pool=pool)
r.set('test_data',[1,2,3,4,5,6,7,8,9]) #将list存入redis
return r.get('test_data') #从redis读取缓存数据
出现如下错误:
redis.exceptions.DataError: Invalid input of type: ‘list’. Convert to a byte, string or number first.
分析报错原因
第一时间搜索了redis支持的数据格式:
It supports data structures such as strings, hashes, lists
, sets, sorted sets with range queries, bitmaps, hyperloglogs, geospatial indexes with radius queries and streams.
查看python-redis版本信息:
去pypi.org官网看看到底什么来头:
The user is responsible for decoding to Python 3 strings or Python 2 unicode objects
再试redis
import redis
import ast
def test_redis():
pool = redis.ConnectionPool(host='127.0.0.1', port=6379, password='test123',db=10)
r = redis.Redis(connection_pool=pool)
r.set('test_data',str([1,2,3,4,5,6,7,8,9])) #将str存入redis
return ast.literal_eval(r.get('test_data')) #从redis读取缓存数据
print(test_redis())
OK:
[1, 2, 3, 4, 5, 6, 7, 8, 9]