Allow skipping an arbitrary number of output components, and also raise a warning if the number of output components does not match the number of values returned from a function

[abidlabs]

This PR does two things to improve the DX when working with many output components:

(1) It allows passing in a single gr.skip() to skip updating all of the components. It also documents gr.skip(), which had been completely undocumented. Closes: #9109

(2) It raises a warning when the number of output components is smaller than the number of returned values from a function. Closes: #6883

[gradio-pr-bot]

🪼 branch checks and previews

•	Name	Status	URL
	Spaces	ready!	Spaces preview
	Website	ready!	Website preview
🦄	Changes	detecting...

---

Install Gradio from this PR

pip install https://gradio-pypi-previews.s3.amazonaws.com/c381f76e5105f1625f451459c6b4db1ae57537bb/gradio-4.44.0-py3-none-any.whl

Install Gradio Python Client from this PR

pip install "gradio-client @ git+https://github.com/gradio-app/gradio@c381f76e5105f1625f451459c6b4db1ae57537bb#subdirectory=client/python"

Install Gradio JS Client from this PR

npm install https://gradio-npm-previews.s3.amazonaws.com/c381f76e5105f1625f451459c6b4db1ae57537bb/gradio-client-1.6.0-beta.3.tgz

Use Lite from this PR

<script type="module" src="https://gradio-lite-previews.s3.amazonaws.com/c381f76e5105f1625f451459c6b4db1ae57537bb/dist/lite.js""></script>

[gradio-pr-bot]

🦄 change detected

This Pull Request includes changes to the following packages.

Package	Version
gradio	minor

• Maintainers can select this checkbox to manually select packages to update.

With the following changelog entry.

Allow skipping an arbitrary number of output components, and also raise a warning if the number of output components does not match the number of values returned from a function

Maintainers or the PR author can modify the PR title to modify this entry.

Something isn't right?

• Maintainers can change the version label to modify the version bump.
• If the bot has failed to detect any changes, or if this pull request needs to update multiple packages to different versions or requires a more comprehensive changelog entry, maintainers can update the changelog file directly.

[abidlabs]

Fixed a few unrelated python typing issues on 5.0-dev

[abidlabs]

The failing Python tests are also failing on 5.0-dev, as are the failing Lite tests. I'll take a look at the failing Python tests next, and @whitphx is looking into the Lite tests

[freddyaboulton]

PR looks good but returning the single skip feels a bit magical to me. What's the use case?

[abidlabs]

When you have a very large number of output components, it’s inconvenient to create a list of skips if you just want to “abort early”. Stepped away for a little bit but it’s in issue linked from the linked issue above I believe

[freddyaboulton]

Sounds good to me @abidlabs !

[abidlabs]

Thanks for the review @freddyaboulton!