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Welcome to the Gradio Blocks Party ๐Ÿฅณ

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Live Blocks Party Leaderboard

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We are happy to invite you to the Gradio Blocks Party - a community event in which we will create interactive demos for state-of-the-art machine learning models. Demos are powerful because they allow anyone โ€” not just ML engineers โ€” to try out models in the browser, give feedback on predictions, identify trustworthy models. The event will take place from May 17th to 31st. We will be organizing this event on Hugging Face and the Hugging Face discord server, check the gradio channel for staying up to date with the event. Prizes will be given at the end of the event, see the Prizes section

We will be building demos using the new Gradio Blocks API. Blocks allows you to build web-based demos in a flexible way using the Gradio library. Gradio is a popular choice for building demos for machine learning models, as it allows you to create web-based UIs all in Python. For example, here is a UI for Dall-E Mini using Gradio Blocks:

More About Gradio

Gradio is a Python library that allows you to quickly build web-based machine learning demos, data science dashboards, or other kinds of web apps, entirely in Python. These web apps can be launched from wherever you use Python (jupyter notebooks, colab notebooks, Python terminal, etc.) and shared with anyone instantly using Gradio's auto-generated share links. To learn more about Gradio see the Getting Started Guide: and the new Course on Huggingface about Gradio: Gradio Course.

Gradio can be installed via pip and comes preinstalled in Hugging Face Spaces, the latest version of Gradio can be set in the README in spaces by setting the sdk_version, for example sdk_version: 3.0.2

To install gradio locally, simply run: pip install gradio

Gradio Blocks

gradio.Blocks is a low-level API that allows you to have full control over the data flows and layout of your application. You can build very complex, multi-step applications using Blocks. If you have already used gradio.Interface, you know that you can easily create fully-fledged machine learning demos with just a few lines of code. The Interface API is very convenient but in some cases may not be sufficiently flexible for your needs. For example, you might want to:

  • Group together related demos as multiple tabs in one web app
  • Change the layout of your demo instead of just having all of the inputs on the left and outputs on the right
  • Have multi-step interfaces, in which the output of one model becomes the input to the next model, or have more flexible data flows in general
  • Change a component's properties (for example, the choices in a Dropdown) or its visibilty based on user input

to learn more about Blocks see the guide

What is Hugging Face Spaces?

Spaces are a simple way to host ML demo apps directly on your profile or your organizationโ€™s profile on Hugging Face. This allows you to create your ML portfolio, showcase your projects at conferences or to stakeholders, and work collaboratively with other people in the ML ecosystem. Learn more about spaces here.

How Does Gradio and Hugging Face work together?

Hugging Face Spaces is a free hosting option for Gradio demos. Spaces comes with 3 SDK options: Gradio, Streamlit and Static HTML demos. Spaces can be public or private and the workflow is similar to github repos. There are over 2000+ Gradio spaces currently on Hugging Face. Learn more about spaces here:

Event Plan

Some examples using Blocks


To participate in the event

Potential ideas for creating spaces:


Other Potential Prizes

  • Staff Picks
  • Most liked Spaces
  • Community Pick (voting)
  • Most Creative Space (voting)
  • Most Educational Space (voting)
  • CEO's pick (one prize for a particularly impactful demo), picked by @clem
  • CTO's pick (one prize for a particularly technically impressive demo), picked by @julien

Creating a Gradio demo on Hugging Face Spaces

Once a model has been picked from the choices above, you can share a model in a Space using Gradio. Read more about how to add Gradio spaces:

Steps to add Gradio Spaces to the Gradio Blocks Party org

  • Create a account on Hugging Face
  • Join the Gradio Blocks Party Organization by clicking "Join Organization" button in the organization page or using the shared link above
  • Once your request is approved, add your space using the Gradio SDK and share the link with the community!

LeaderBoard for Most Popular Blocks Event Spaces

See the Live Blocks Party Leaderboard


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