Getting TypeError: the JSON object must be str, bytes or bytearray, not NoneType-CodePudding

My code is:

import json
import cozmo
from bitcoinrpc.authproxy import AuthServiceProxy, JSONRPCException

def getinfo():
 rpc_connection = AuthServiceProxy("http://%s:%[email protected]:22225"%("user", "pass"))
 print(rpc_connection.getinfo())

data = json.loads(getinfo())
jtopy=json.dumps(data)
dict_json=json.loads(jtopy)

print(dict_json)

#def cozmosay(robot: cozmo.robot.Robot):
#    robot.say_text(getinfo).wait_for_completed()
#
#cozmo.run_program(cozmosay)

The code should return "This is a pre-release test build - use at your own risk - do not use for mining or merchant applications" as the full string is { "version": 1150100, "protocolversion": 70015, "walletversion": 60000, "balance": 94356667.32563662, "blocks": 133199, "timeoffset": 0, "connections": 4, "proxy": "", "difficulty": 11.30994666912951, "testnet": false, "keypoololdest": 1637356708, "keypoolsize": 692, "paytxfee": 0.00000000, "relayfee": 0.00100000, "errors": "This is a pre-release test build - use at your own risk - do not use for mining or merchant applications" } but I get this error:

TypeError: the JSON object must be str, bytes or bytearray, not NoneType

CodePudding user response：

Currently, getinfo() has no return statement so it returns NoneType. You should use return instead of print the data only.