It's like you say, and like the qt blog says, "opening to python world"
About your second question (c++ vs python), even I am curious
Re:Hello Qt for Python
by marcosdumay on Sunday May 06, 2018 @12:32PM
(#17006983)
Python is a much higher level language than C++, with all the problems and benefits of that.
If I were ever to write a desktop app, which one should I choose, given I'm equally comfortable with both languages?