Don't put noise in the scrollbar for unused function arguments named __ in Python

[vsfeedback]

This issue has been moved from a ticket on Developer Community.

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This code makes Visual Studio complain that the variable function arguments __ is unused. I think it should work like _. Because _ don't create noise in the scrollbar. When I

from my_module import default_kafka_function

def wrapper_kafka_function(*_, **__):
    default_kafka_function()

Alternatively I would be happy if this did not create noise in the scrollbar.

from my_module import default_kafka_function

def wrapper_kafka_function(*args, **kwargs):
        default_kafka_function()

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Original Comments

Feedback Bot on 5/6/2024, 08:42 PM:

(private comment, text removed)

[StellaHuang95]

Put in the triage to discussion with the team.

1. Is it expected that the diagnostics show up on hover with reportUnusedXXX set to false?
   

2. I can repro it with a simple functioin
   

[StellaHuang95]

Thank you for reaching out about the diagnostic hints you are seeing in PTVS.

The behavior you described, where xxx is not accessed hints appear on hover, is by design. This also applies to kwargs. PTVS utilizes Pylance as its language server to provide these diagnostic features.

Using an underscore (_) as a parameter name is a common and accepted practice to indicate that a value will not be used. Therefore, Pylance recognizes _ as a deliberate choice and does not report it as unused.

The diagnostic hints displayed on hover by Pylance are intentional, and there is no way to disable this through PTVS. If you would like to suggest a change or look for a way to turn off these hints, we recommend proposing this feature on the Pylance GitHub repository at https://github.com/microsoft/pylance-release