Custom error message for comparison-with-callable

[herenali]

Proposed Changes

Added custom error message for comparison-with-callable (W0143) to improve clarity of error message.

...

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[coveralls]

Pull Request Test Coverage Report for Build 12736593179

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

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Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall first build on custom-error-message at 92.509%

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Totals
Change from base Build 12690545260:	92.5%
Covered Lines:	3211
Relevant Lines:	3471

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💛 - Coveralls

[david-yz-liu]

Thank you, @herenali! I left some comments for the specific message, but otherwise looks good.

[david-yz-liu]

Let's use just the term "function" instead of "callable" in the description, as the latter isn't commonly taught for beginners.

And at the end, please say "parenthesis, ()" instead of just "parenthesis", just to be a bit more concrete.

[david-yz-liu]

Thanks, @herenali!