Qt for Python (PySide/Shiboken)

Good morning, I managed to create the buttons dynamically, I was instantiating them in the constructor so it wasn't working, I had to instantiate them in the add button method, then it worked.

Can I use python database features in conjunction with qt slots and connections or is better use qt sql instead? And why?

The answer is yes, you can. The reason that QtSql might be better is that all slots and connections are already in place and most of the runtime execution remains in compiled C++.