More multiple inheritance porting

setup/qt5-migrate.py

@@ -26,15 +26,6 @@
 # http://qt-project.org/doc/qt-5/obsoleteclasses.html as these will not be
 # present in PyQt5
 
-# QT5XX: For classes that inherit both a QObject based class and
-# SearchQueryParser, PyQt5 class the SearchQueryParser __init__ method when
-# calling the QObject based classes __init__ method. The simplest fix is to
-# make SearchQueryParser the first base class instead of the second. An
-# alternative fix is to create a derived class from SearchQueryParser whose
-# __init__ method accepts any args and does nothing and inherit from that. Do
-# this porting and test the results when possible. Porting already done and
-# tested for keyboard.py
-
 # QT5XX: Delete this file after migration is completed
 
 import os, re

src/calibre/gui2/preferences/plugins.py

@@ -23,7 +23,12 @@
 from calibre.utils.icu import lower
 from calibre.constants import iswindows
 
-class PluginModel(QAbstractItemModel, SearchQueryParser):  # {{{
+class AdaptSQP(SearchQueryParser):
+
+    def __init__(self, *args, **kwargs):
+        pass
+
+class PluginModel(QAbstractItemModel, AdaptSQP):  # {{{
 
     def __init__(self, show_only_user_plugins=False):
         QAbstractItemModel.__init__(self)

src/calibre/gui2/preferences/tweaks.py

@@ -25,6 +25,11 @@
 
 ROOT = QModelIndex()
 
+class AdaptSQP(SearchQueryParser):
+
+    def __init__(self, *args, **kwargs):
+        pass
+
 class Delegate(QStyledItemDelegate):  # {{{
     def __init__(self, view):
         QStyledItemDelegate.__init__(self, view)
@@ -98,7 +103,7 @@ def update(self, varmap):
 
 # }}}
 
-class Tweaks(QAbstractListModel, SearchQueryParser):  # {{{
+class Tweaks(QAbstractListModel, AdaptSQP):  # {{{
 
     def __init__(self, parent=None):
         QAbstractListModel.__init__(self, parent)