How does Textual implement its reactive system?

[@Gordonfreems]

I’m such a fan of Textual and Rich the code is so clean it gives me goosebumps

[@zechcodes7830]

Great video! Very neat to see how an interesting thing like reactivity is being done on a popular project. Thanks!

[@pauleveritt201]

Yep, I agree. There are some Python reactive libraries -- big packages, small packages. But this is the first I've seen where it is wedded to an application using it (i.e. bundled.)

[@whostolehonno]

That was fun!

[@RbladerOS]

Nice video! Thank you. It seems `Widget` inherits from `MessagePump` by the way, just like `App`, which confused me at first. I think every MessagePump object can send/receive messages and pass them on, and then the App's MessagePump can be quickly accessed via the ContextVar you mentioned. But I'll have to look into it again.