Getting feature attribute description with PyQGIS

Question

I have a vector layer in which attributes have value maps and I need to get the description of the value. I am able to get the values with feature.attributes(), but I haven't found a way to get the description.

layer = canvas.currentLayer()
attributes = feature.attributes()
print attributes[5] # prints 0, but I need Unknown

Answer 1

You could use the following to get the description of a specific value:

For PyQGIS 3

layer = iface.activeLayer()

idx = layer.fields().indexFromName('fieldName')
for dicts in layer.editorWidgetSetup(idx).config().values():
    print(list(dicts.keys())[list(dicts.values()).index('0')])

For PyQGIS 2

layer = iface.activeLayer()

idx = layer.fieldNameIndex('fieldName')
for description, value in layer.editorWidgetV2Config(idx).iteritems():
    if value == '0':
        print description