python - Special characters in QGIS script tools

I would like to write a script that includes a selection from the attribute table. But my data is in Hungarian, so it includes special characters like: öüőűáéí

So when there is non of these in the query it executes, otherwise I get this:

Is there a setting or something to solve this?

Answer

What happens when you use diacritic characters?

It might be a simple python problem. Open the python editor in QGIS, and ensure that you start with the two comment lines on the top, like this:

#!/usr/bin/env python
# -*- coding: utf-8 -*-
layers = QgsMapLayerRegistry.instance().mapLayersByName('utilizador') 
layer = layers[0]
it = layer.getFeatures()

layer.startEditing()
for feat in it:

  layer.changeAttributeValue(feat.id(), 7, u'Jó napot kívánok!')

layer.commitChanges()