How to use KDE Okular’s document view widget in a Python Qt app?

I am writing a desktop application in Python (3.4) on Linux using Qt (4.8) and PyQt.

Is there a way to use/import Okular’s pdf view functionality as a widget? If yes, how?

Answer

This works for me:

import sys
from PyKDE4.kdecore import ki18n, KAboutData, KCmdLineArgs
from PyKDE4.kdecore import KLibLoader as ll
from PyKDE4.kdeui import KApplication
import PyKDE4.kparts as kp


appName     = "KApplication"
catalog     = ""
programName = ki18n ("KApplication")
version     = "1.0"
description = ki18n ("KApplication")
license     = KAboutData.License_GPL
copyright   = ki18n ("(c) 2007 John Doe")
text        = ki18n ("none")
homePage    = "www.johndoe.com"
bugEmail    = "[e-mail] "

aboutData   = KAboutData(
    appName, catalog, programName, version, description,
    license, copyright, text, homePage, bugEmail
)

KCmdLineArgs.init(sys.argv, aboutData)

app     = KApplication()
win     = kp.KParts.MainWindow()
okupart = ll.self().factory('okularpart').create()
win.setCentralWidget(okupart.widget())
win.show()

app.exec_()