Python - formlayout

formlayout is a tiny Python module for creating form dialogs/widgets to edit various type of parameters with having to write any GUI code (it requires Python 2.x and PyQt4 4.y, with x >= 5 and y > 3).
The main advantage of formlayout over similar libraries is that it's very simple to use/install and that it's so light (it just needs PyQt4 to run).

However, if you are looking for more advanced automatic GUI generation, try the guidata library: this is an incredible combination of simplicity and power (and its compatible with PyQt4 and mostly with PySide too).