python example does not work any more

[wenwenchenbosch]

I got the following warning, when I run the python basic example

python run.py
2021-06-18T14:55:54.019Z INFO [ 61872ecc-79fe-4471-a764-1a010ad8a150.MqttClient-8bc83b20 ]: *****INFO***** Using topic namespace iotea/
2021-06-18T14:55:54.019Z INFO [ Talent.python-basic-talent-4497ba31 ]: Talent python-basic-talent-4497ba31 started successfully
2021-06-18T14:55:54.019Z INFO [ 61872ecc-79fe-4471-a764-1a010ad8a150.MqttClient-8bc83b20 ]: Connecting to mqtt://localhost:1883 ...
2021-06-18T14:55:54.023Z WARNING [ hbmqtt.mqtt.protocol.handler ]: Unhandled exception: 'Lock' object is not iterable
Connection failed: TypeError("'Lock' object is not iterable")
2021-06-18T14:55:55.025Z WARNING [ hbmqtt.mqtt.protocol.handler ]: Unhandled exception: 'Lock' object is not iterable
Reconnection attempt failed: TypeError("'Lock' object is not iterable")
2021-06-18T14:55:57.028Z WARNING [ hbmqtt.mqtt.protocol.handler ]: Unhandled exception: 'Lock' object is not iterable
Reconnection attempt failed: TypeError("'Lock' object is not iterable")
2021-06-18T14:55:59.030Z WARNING [ hbmqtt.mqtt.protocol.handler ]: Unhandled exception: 'Lock' object is not iterable
Reconnection attempt failed: TypeError("'Lock' object is not iterable")
2021-06-18T14:56:01.033Z WARNING [ hbmqtt.mqtt.protocol.handler ]: Unhandled exception: 'Lock' object is not iterable

After I send events using mqtt tool node cli.js pub -c "mqtt://localhost:1883" -t "iotea/ingestion/events" -f "../../sdk/python/examples/basic/events.txt" --times 1 --delayMs 2000 --transform iotea.ts-now.jna
no event reached the basic example.

I am using python 3.9.5.

[llakie]

@mariaivanova-git Can you check, if it has anything to do with the protocol gateway implementation

[mariaivanova-git]

The error seems to be due to the incompatibility of hbmqtt with python3.9 (njouanin/hbmqtt#223)
and has been recorded before (#47).

Unfortunately hbmqtt does not provide a fix, so for the moment using a python version 3.7 or 3.8 could be the solution.

[llakie]

Fixed by PR #113