What's the current state of the art of managing multiple virtual environments, running tests and running your application?
On Ubuntu and Windows I use Poetry [0], and it works, although it has (had?) some quirks during the installation on Windows. I liked its portability and lockfile format though.
A few years ago I used conda [1], which was nice because it came batteries included especially for Deep Learning stuff. I switched because it felt way to heavy for porting scripts and small applications to constrained devices like a Raspberry Pi.
And then there are also Docker Images, which I use if I want to give an application to somebody that "just works".
What's your method of choice?
I'm liking PDM for a while now. Quicker than Poetry and built according to the Python package spec in mind and not as an afterthought. While it was originally meant to work with PEP 582, it works with virtual environments too (now default).