Some more iteritems fixes

src/calibre/gui2/tweak_book/preview.py

@@ -37,7 +37,7 @@ from calibre.gui2.webengine import (
 )
 from calibre.gui2.widgets2 import HistoryLineEdit2
 from calibre.utils.ipc.simple_worker import offload_worker
-from polyglot.builtins import unicode_type
+from polyglot.builtins import iteritems, unicode_type
 from polyglot.queue import Empty, Queue
 from polyglot.urllib import urlparse
 
@@ -206,7 +206,7 @@ class UrlSchemeHandler(QWebEngineUrlSchemeHandler):
 
     def check_for_parse(self):
         remove = []
-        for name, requests in self.requests.iteritems():
+        for name, requests in iteritems(self.requests):
             data = parse_worker.get_data(name)
             if data is not None:
                 if not isinstance(data, bytes):

src/calibre/gui2/viewer2/web_view.py

@@ -25,6 +25,7 @@ from calibre.gui2.webengine import (
     secure_webengine, to_js
 )
 from calibre.utils.config import JSONConfig
+from polyglot.builtins import iteritems
 
 try:
     from PyQt5 import sip
@@ -301,7 +302,7 @@ class WebView(RestartingWebEngineView):
         return self._page.bridge
 
     def on_bridge_ready(self):
-        for func, args in self.pending_bridge_ready_actions.iteritems():
+        for func, args in iteritems(self.pending_bridge_ready_actions):
             getattr(self.bridge, func)(*args)
 
     def start_book_load(self):

src/calibre/gui2/webengine.py

@@ -12,6 +12,7 @@ from PyQt5.QtWebEngineWidgets import QWebEnginePage, QWebEngineScript, QWebEngin
 from calibre import prints
 from calibre.utils.monotonic import monotonic
 from calibre.utils.rapydscript import special_title
+from polyglot.builtins import iteritems
 
 
 def secure_webengine(view_or_page_or_settings, for_viewer=False):
@@ -77,10 +78,10 @@ class Bridge(QObject):
 
     def __init__(self, page):
         QObject.__init__(self, page)
-        self._signals = json.dumps(tuple({k for k, v in self.__class__.__dict__.iteritems() if isinstance(v, pyqtSignal)}))
+        self._signals = json.dumps(tuple({k for k, v in iteritems(self.__class__.__dict__) if isinstance(v, pyqtSignal)}))
         self._signals_registered = False
         page.titleChanged.connect(self._title_changed)
-        for k, v in self.__class__.__dict__.iteritems():
+        for k, v in iteritems(self.__class__.__dict__):
             if isinstance(v, to_js):
                 v.name = k
 
@@ -98,7 +99,7 @@ class Bridge(QObject):
 
     def _register_signals(self):
         self._signals_registered = True
-        for k, v in self.__class__.__dict__.iteritems():
+        for k, v in iteritems(self.__class__.__dict__):
             if isinstance(v, to_js):
                 setattr(self, k, to_js_bound(self, k))
         self.page.runJavaScript('python_comm._register_signals(' + self._signals + ')', QWebEngineScript.ApplicationWorld)