Err, aren’t Python and Rust designed to write completely different kinds of programs?
Python => scripting, data stuff, unsafe and slow, quick’n’dirty PoCs
Rust => compiled, system stuff, robust and fast, production work.
If the author is balancing the 2, they probably should have used C# !
This however does not stop people from trying to use their one preferred language fer beyond it's focus area.
IMO one of the major turning points in a developers career is when they learn that finding the right tool for the problem is always the game you are playing. But this almost always takes learning this lesson the hard way by pushing a language one know very well past its breakpoint.
Rust is surprisingly good at many tasks I would otherwise pick "the proper" tool for. A web service, a quick frontend in wasm (leptos), a hackish commandline tool, or, indeed, that low-level/embedded thing that Rust was "meant" for.