Python exception when running example.py

[surfskidude]

Why do I get the following error when running example.py

$ python3 example.py
Traceback (most recent call last):
File "/mnt/c/tmp/tahu/python/examples/example.py", line 19, in
import sparkplug_b as sparkplug
File "/mnt/c/tmp/tahu/python/examples/../core/sparkplug_b.py", line 13, in
import sparkplug_b_pb2
File "/mnt/c/tmp/tahu/python/examples/../core/sparkplug_b_pb2.py", line 29, in
_PAYLOAD_TEMPLATE_PARAMETER_PARAMETERVALUEEXTENSION = _descriptor.Descriptor(
File "/usr/local/lib/python3.10/dist-packages/google/protobuf/descriptor.py", line 313, in new
_message.Message._CheckCalledFromGeneratedFile()
TypeError: Descriptors cannot not be created directly.
If this call came from a _pb2.py file, your generated code is out of date and must be regenerated with protoc >= 3.19.0.
If you cannot immediately regenerate your protos, some other possible workarounds are:

1. Downgrade the protobuf package to 3.20.x or lower.
2. Set PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python (but this will use pure-Python parsing and will be much slower).

[tgrusendorf]

Chances are you are getting this because you are running a version of the protobuf package >3.20.x and the sparkplug_b_pb2.py file in this repo hasn't been regenerated with a compatible version of protoc. I regenerated the sparkplug_b_pb2.py file and the error went away for me.

I'm running protobuf version 4.21.9.

If you are using pip, you can check your version by running:
pip show protobuf