Erro do Python: ImportError: Nenhum módulo chamado QtWebKit

Question

Acabei de instalar o Anki, mas quando tento executar o programa, recebo:

Traceback (most recent call last):

File "/usr/bin/anki", line 7, in <module>
    import aqt
File "/usr/share/anki/aqt/__init__.py", line 12, in <module>
    from aqt.qt import *
File "/usr/share/anki/aqt/qt.py", line 22, in <module>
    from PyQt4.QtWebKit import QWebPage, QWebView, QWebSettings
ImportError: No module named QtWebKit

Eu instalei todos os pacotes QTweb mencionados nesta postagem: [ link ], mas o mesmo problema permanece.