Update protobuf import to avoid pylint errors

[daniel-zullo-frequenz]

What's needed?

Remove the pylint no-name-in-module disable comments in src/frequenz/sdk/microgrid/client/_client.py.

Proposed solution

Update import to avoid the pylint error no-name-in-module as follows:

From:

from google.protobuf.empty_pb2 import Empty  # pylint: disable=no-name-in-module

To:

from google.protobuf import empty_pb2

Once the change above is made, use empty_pb2.Empty instead and remove all the comments to disable the pylint error in src/frequenz/sdk/microgrid/client/_client.py

Additional context

Suggested in #708 (review)

[llucax]

I would extend this issue to change all other imports from protobuf stuff, I think there should be more in the client code.

[llucax]

OK, so it seems the test I did was wrong, and we effectively need to add an ignore where the symbol is used anyways, so I'll close this as invalid.

BTW, the underlying issue seems to be that pylint doesn't read stub (.pyi) files, which is supposed to be fixed in 3.0.0, but doing a simple test it seems like the issue persists with 3.0.0.

I guess we need to test it properly and maybe report to pylint if the issue is still there.

• Module 'google.protobuf.any_pb2' has no 'Any' member  pylint-dev/pylint#6281
• [feature] Being able to use stub pyi files in pylint pylint-dev/pylint#4987