With the latest release of Maya 2014, Autodesk is now including the PySide Libraries, which will allow you to access the QT interface framework from within Python scripts.
Here, Chris Zurbrigg demonstrates how to create a simple QT window in Maya using PySide, showing the fundamentals of working with the QT Framework in Maya.
This lesson demonstrates how to create a simple Qt window inside of Maya using PySide
Adding the PySide Libraries in Maya is a huge benefit to developers and TD’s alike as Chris notes, it is no longer necessary to have users install PySide or PyQT to run tools, scripts or plugins.
Creating a simple “hello world” window, Chris provides a simple walkthrough for using PySide in Maya 2014 exemplifying the principles of working with QT in Maya.