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Some widgets are pretty advanced, I saw a presentation by a developer from Bloomberg, in NYC, about their bqplot widget library.

They even have gamepad/controller support, which allows dynamic interactions with widgets.

Edit: Live demo of the project from PyData London 2016: https://youtu.be/eVET9IYgbao?t=27m45s

And this depends on ipywidgets (or at least similar - Syvian Corlayhas developed both).

These widgets support embedding in other contexts like static HTML pages or Sphinx docs [1]. An example can be seen on the docs [2]