[Psycho_Coder]

Very helpful turorial, PyQt is a very powerful library probably the best to use with Python when its about more demanding applications.
Great job @Psycho_Coder

Thank you.

PyQt is a version of the Qt Framework to work with Python specifically. It was originally designed for working with C++. Its a platform independent GUI framework.

When used with C++ it gets very fast.

I know I 've used it in Python too.Also made some tries on C++ with Qt Creator but noobish ones.C++ is in the most cases very fast dude.

EDIT : Also I didn't know about qss and how to combine them on PyQt... Do you know if I can do the same with PyQt4 man?

Yes you can