If you don't want to pay for a commercial license, just use PySide. It's LGPL-licensed and has nearly exactly the same API as PyQT. So near that when I switched out PyQT with PySide, all I had to do was change two import statements throughout a ~3000 python gui application.
Yeah, except that it seems like PySide still doesn't support Qt 5.x according to [1]? While there is a page for PySide2 [2], I can't figure out if it's complete or not.
