Wrap Up

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Slide Contents

What we covered

  • Shiny’s input β†’ output β†’ reactivity model
  • Building and running your first app
  • @reactive.calc for shared computations
  • Dashboard layouts: sidebars, columns, cards, value boxes
  • Deploying to Posit Connect Cloud
  • Integrating LLMs with chatlas, shinychat, and querychat
  • Testing with Playwright

Key concepts to take home

  • Reactivity is automatic β€” Shiny tracks dependencies for you
  • Start static β€” get the visualization right, then add inputs
  • @reactive.calc β€” avoid redundant computation across outputs
  • requirements.txt β€” always needed for deployment
  • SQL is a great intermediate language between humans and LLMs

This workshop

Everything from today:

https://github.com/chendaniely/pycon-2026-shiny

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