Note to self and world: PyQt PyKDE discovering state of num scroll and caps lock keys

If you are looking for a Qt only solution, I am sorry, but that is not available (according to a bug report on qt which I now can’t find). If you are against using the KDE libraries, I am pretty sure you can do it with SDL.

import sys
from PyKDE4 import kdeui
from PyQt4.QtGui import QApplication
from PyQt4.QtCore import Qt

app = QApplication(sys.argv)
a = kdeui.KModifierKeyInfo()
print(a.isKeyLocked(Qt.Key_NumLock))

The keys are in the PyQt4.QtCore.Qt class (and the names of the keys can be found in the qt docs).