Byte Json cannot be loaded after transforming to string json-CodePudding

The Json that its receiving in message is a byte json like so: b'{"_timestamp": 1636472787, "actual": 59.9, "target": 60.0}' The Code is supposed to change the byte Json to String Json and load it to access the items but when I load it I get the following error:

raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

Code:

import json
def handle_msg(topic, message):
    m = message.decode("Utf-8")
    print(json.loads(m))

CodePudding user response：

this is happening because you message is null value not as you expected if you write the following it will work for you the following running for me

message = b'{"_timestamp": 1636472787, "actual": 59.9, "target": 60.0}'
topic ="what ever"
import json 
def handle_msg(topic, message):
    m = message.decode("Utf-8")
    print(json.loads(m))
handle_msg(topic, message)