qgis - How to iterate over features and abort iteration with keypress in PyQGIS?

I would like to run a loop with PyQGIS, it should wait for the user to press a key either SpaceBar or Escape to continue.

canvas = qgis.utils.iface.mapCanvas()
aLayer = canvas.currentLayer()

feat = QgsFeature()

iter = aLayer.getFeatures()

while iter.nextFeature(feat):
    aLayer.removeSelection()
    aLayer.select(feat.id())
    qgis.utils.iface.actionZoomToSelected().trigger()

    

How can I do that?