Seeking Python library for RouteBoxer

I am trying to use Azure Functions as an API that returns a set of boxes(Lat Lng for each corner) along a route, final scope is to identify if a point is located near the route based on an offset distance.

For browser, I have found out that RouteBoxer is doing a great job at this however it can not work in Azure Functions Node.JS

There is also a package leaflet-headless however it uses some dependencies that are no longer available/are deprecated.

I am left with trying on Python. Would you recommend a library that achieves this?