Run Spotlight queries from console in Python

spotlight.py

#!/usr/bin/env python
# encoding: utf-8

from AppKit import *
from Foundation import *
from Cocoa import *
from PyObjCTools import AppHelper


class Delegate(NSObject):
    def queryNotification_(self, note):
        if note.name() == NSMetadataQueryGatheringProgressNotification:
            items = note.userInfo()['kMDQueryUpdateAddedItems']
            for item in items:
                print item.valueForAttribute_('kMDItemPath')


delegate = Delegate.alloc().init()

query = NSMetadataQuery.alloc().init()

notecenter = NSNotificationCenter.defaultCenter()
notecenter.addObserver_selector_name_object_(delegate, 'queryNotification:', None, query)

query.setDelegate_(delegate)
query.setPredicate_(NSPredicate.predicateWithFormat_('kMDItemIsScreenCapture = 1'))
query.startQuery()

try:
    AppHelper.runConsoleEventLoop(installInterrupt=True)
except KeyboardInterrupt:
    AppHelper.stopEventLoop()
finally:
    query.stopQuery()