I'm coming from PHP too, imo it's harder to learn a new framework there than getting familiar with Python. At least for the basics. I would still opt for PHP for a bigger CRUD app, but for smaller projects not centered around an SQL database I really cherish the simplicity of Python.

As the script may need to run for hours it wouldn't be a problem to serve a frontend with another language and just call the script. Or migrate it, it's only a little more than 100 lines. I didn't intend to push you into doing it though :D