Initial auto-conversion of PyQt imports

src/calibre/customize/__init__.py

@@ -133,7 +133,7 @@ class Plugin(object):  # {{{
         True if the user clicks OK, False otherwise. The changes are
         automatically applied.
         '''
-        from PyQt5.Qt import QDialog, QDialogButtonBox, QVBoxLayout, \
+        from qt.core import QDialog, QDialogButtonBox, QVBoxLayout, \
                 QLabel, Qt, QLineEdit
         from calibre.gui2 import gprefs
 
@@ -148,7 +148,7 @@ class Plugin(object):  # {{{
             if geom is None:
                 config_dialog.resize(config_dialog.sizeHint())
             else:
-                from PyQt5.Qt import QApplication
+                from qt.core import QApplication
                 QApplication.instance().safe_restore_geometry(config_dialog, geom)
 
         button_box.accepted.connect(config_dialog.accept)

src/calibre/customize/zipplugin.py

@@ -70,7 +70,7 @@ def get_icons(zfp, name_or_list_of_names):
                 If a single path is passed in the return value will
                 be A QIcon.
     '''
-    from PyQt5.Qt import QIcon, QPixmap
+    from qt.core import QIcon, QPixmap
     names = name_or_list_of_names
     ans = get_resources(zfp, names)
     if isinstance(names, string_or_bytes):

src/calibre/db/cache.py

@@ -724,7 +724,7 @@ class Cache(object):
                 return
             ret = buf.getvalue()
             if as_image:
-                from PyQt5.Qt import QImage
+                from qt.core import QImage
                 i = QImage()
                 i.loadFromData(ret)
                 ret = i

src/calibre/devices/kobo/kobotouch_config.py

@@ -8,7 +8,7 @@ __docformat__ = 'restructuredtext en'
 
 import textwrap
 
-from PyQt5.Qt import (QWidget, QLabel, QGridLayout, QLineEdit, QVBoxLayout,
+from qt.core import (QWidget, QLabel, QGridLayout, QLineEdit, QVBoxLayout,
                       QDialog, QDialogButtonBox, QCheckBox, QPushButton)
 
 from calibre.gui2.device_drivers.tabbed_device_config import TabbedDeviceConfig, DeviceConfigTab, DeviceOptionsGroupBox

src/calibre/ebooks/conversion/plugins/pdf_output.py

@@ -148,8 +148,8 @@ class PDFOutput(OutputFormatPlugin):
         # Ensure Qt is setup to be used with WebEngine
         # specialize_options is called early enough in the pipeline
         # that hopefully no Qt application has been constructed as yet
-        from PyQt5.QtWebEngineCore import QWebEngineUrlScheme
+        from qt.webengine import QWebEngineUrlScheme
-        from PyQt5.QtWebEngineWidgets import QWebEnginePage  # noqa
+        from qt.webengine import QWebEnginePage  # noqa
         from calibre.gui2 import must_use_qt
         from calibre.constants import FAKE_PROTOCOL
         scheme = QWebEngineUrlScheme(FAKE_PROTOCOL.encode('ascii'))

src/calibre/ebooks/covers.py

@@ -12,7 +12,7 @@ from math import ceil, sqrt, cos, sin, atan2
 from polyglot.builtins import iteritems, itervalues, map, zip, string_or_bytes
 from itertools import chain
 
-from PyQt5.Qt import (
+from qt.core import (
     QImage, Qt, QFont, QPainter, QPointF, QTextLayout, QTextOption,
     QFontMetrics, QTextCharFormat, QColor, QRect, QBrush, QLinearGradient,
     QPainterPath, QPen, QRectF, QTransform, QRadialGradient
@@ -727,7 +727,7 @@ def generate_masthead(title, output_path=None, width=600, height=60, as_qimage=F
 
 
 def test(scale=0.25):
-    from PyQt5.Qt import QLabel, QPixmap, QMainWindow, QWidget, QScrollArea, QGridLayout
+    from qt.core import QLabel, QPixmap, QMainWindow, QWidget, QScrollArea, QGridLayout
     from calibre.gui2 import Application
     app = Application([])
     mi = Metadata('Unknown', ['Kovid Goyal', 'John & Doe', 'Author'])

src/calibre/ebooks/html/to_zip.py

@@ -73,7 +73,7 @@ every time you add an HTML file to the library.\
         True if the user clicks OK, False otherwise. The changes are
         automatically applied.
         '''
-        from PyQt5.Qt import (QDialog, QDialogButtonBox, QVBoxLayout,
+        from qt.core import (QDialog, QDialogButtonBox, QVBoxLayout,
                 QLabel, Qt, QLineEdit, QCheckBox)
 
         config_dialog = QDialog(parent)

src/calibre/ebooks/oeb/display/webview.py

@@ -50,7 +50,7 @@ def load_as_html(html):
 def load_html(path, view, codec='utf-8', mime_type=None,
               pre_load_callback=lambda x:None, path_is_html=False,
               force_as_html=False, loading_url=None):
-    from PyQt5.Qt import QUrl, QByteArray
+    from qt.core import QUrl, QByteArray
     if mime_type is None:
         mime_type = guess_type(path)[0]
         if not mime_type:

src/calibre/ebooks/oeb/polish/check/css.py

@@ -13,8 +13,8 @@ try:
     from PyQt5 import sip
 except ImportError:
     import sip
-from PyQt5.Qt import QApplication, QEventLoop, pyqtSignal
+from qt.core import QApplication, QEventLoop, pyqtSignal
-from PyQt5.QtWebEngineWidgets import (
+from qt.webengine import (
     QWebEnginePage, QWebEngineProfile, QWebEngineScript
 )
 

src/calibre/ebooks/oeb/polish/check/images.py

@@ -32,7 +32,7 @@ class CMYKImage(BaseError):
     level = WARN
 
     def __call__(self, container):
-        from PyQt5.Qt import QImage
+        from qt.core import QImage
         from calibre.gui2 import pixmap_to_data
         ext = container.mime_map[self.name].split('/')[-1].upper()
         if ext == 'JPG':

src/calibre/ebooks/oeb/transforms/rasterize.py

@@ -8,7 +8,7 @@ __copyright__ = '2008, Marshall T. Vandegrift <llasram@gmail.com>'
 
 import os, re
 
-from PyQt5.Qt import (
+from qt.core import (
     Qt, QByteArray, QBuffer, QIODevice, QColor, QImage, QPainter, QSvgRenderer)
 from calibre.ebooks.oeb.base import XHTML, XLINK
 from calibre.ebooks.oeb.base import SVG_MIME, PNG_MIME

src/calibre/ebooks/pdf/develop.py

@@ -5,8 +5,8 @@
 
 import sys
 
-from PyQt5.Qt import QApplication, QUrl, QPageLayout, QPageSize, QMarginsF
+from qt.core import QApplication, QUrl, QPageLayout, QPageSize, QMarginsF
-from PyQt5.QtWebEngineWidgets import QWebEnginePage
+from qt.webengine import QWebEnginePage
 
 from calibre.gui2 import load_builtin_fonts, must_use_qt
 from calibre.utils.podofo import get_podofo

src/calibre/ebooks/pdf/html_writer.py

@@ -14,11 +14,11 @@ from collections import namedtuple
 from html5_parser import parse
 from io import BytesIO
 from itertools import count, repeat
-from PyQt5.Qt import (
+from qt.core import (
     QApplication, QMarginsF, QObject, QPageLayout, Qt, QTimer, QUrl, pyqtSignal
 )
-from PyQt5.QtWebEngineCore import QWebEngineUrlRequestInterceptor
+from qt.webengine import QWebEngineUrlRequestInterceptor
-from PyQt5.QtWebEngineWidgets import QWebEnginePage, QWebEngineProfile
+from qt.webengine import QWebEnginePage, QWebEngineProfile
 
 from calibre import detect_ncpus, human_readable, prepare_string_for_xml
 from calibre.constants import __version__, iswindows

src/calibre/ebooks/pdf/image_writer.py

@@ -3,7 +3,7 @@
 # License: GPL v3 Copyright: 2019, Kovid Goyal <kovid at kovidgoyal.net>
 
 
-from PyQt5.Qt import QMarginsF, QPageLayout, QPageSize, QSizeF
+from qt.core import QMarginsF, QPageLayout, QPageSize, QSizeF
 
 from calibre.constants import filesystem_encoding
 from calibre.ebooks.pdf.render.common import cicero, cm, didot, inch, mm, pica

src/calibre/ebooks/pdf/pageoptions.py

@@ -5,7 +5,7 @@ __license__ = 'GPL 3'
 __copyright__ = '2009, John Schember <john@nachtimwald.com>'
 __docformat__ = 'restructuredtext en'
 
-from PyQt5.Qt import QPrinter
+from qt.core import QPrinter
 
 UNITS = {
             'millimeter' : QPrinter.Unit.Millimeter,

src/calibre/ebooks/pdf/render/gradients.py

@@ -10,7 +10,7 @@ import sys, copy
 from polyglot.builtins import map, range
 from collections import namedtuple
 
-from PyQt5.Qt import QLinearGradient, QPointF
+from qt.core import QLinearGradient, QPointF
 try:
     from PyQt5 import sip
 except ImportError:

src/calibre/ebooks/pdf/render/graphics.py

@@ -9,7 +9,7 @@ __docformat__ = 'restructuredtext en'
 from math import sqrt
 from collections import namedtuple
 
-from PyQt5.Qt import (
+from qt.core import (
     QBrush, QPen, Qt, QPointF, QTransform, QPaintEngine, QImage)
 
 from calibre.ebooks.pdf.render.common import (

src/calibre/ebooks/pdf/render/serialize.py

@@ -9,7 +9,7 @@ __docformat__ = 'restructuredtext en'
 import hashlib, numbers
 from polyglot.builtins import map, iteritems
 
-from PyQt5.Qt import QBuffer, QByteArray, QImage, Qt, QColor, qRgba, QPainter
+from qt.core import QBuffer, QByteArray, QImage, Qt, QColor, qRgba, QPainter
 
 from calibre.constants import (__appname__, __version__)
 from calibre.ebooks.pdf.render.common import (

src/calibre/ebooks/render_html.py

@@ -6,10 +6,10 @@
 import os
 import sys
 
-from PyQt5.Qt import (
+from qt.core import (
     QApplication, QMarginsF, QPageLayout, QPageSize, Qt, QTimer, QUrl
 )
-from PyQt5.QtWebEngineWidgets import QWebEnginePage, QWebEngineScript
+from qt.webengine import QWebEnginePage, QWebEngineScript
 
 from calibre.ebooks.metadata.pdf import page_images
 from calibre.gui2 import must_use_qt

src/calibre/gui2/__init__.py

@@ -13,14 +13,13 @@ import threading
 from contextlib import contextmanager
 from threading import Lock, RLock
 
-from PyQt5.Qt import (
+from qt.core import (
     QT_VERSION, QApplication, QBuffer, QByteArray, QCoreApplication, QDateTime,
     QDesktopServices, QDialog, QEvent, QFileDialog, QFileIconProvider, QFileInfo, QPalette,
     QFont, QFontDatabase, QFontInfo, QFontMetrics, QIcon, QLocale, QColor,
     QNetworkProxyFactory, QObject, QSettings, QSocketNotifier, QStringListModel, Qt,
-    QThread, QTimer, QTranslator, QUrl, pyqtSignal, QIODevice, QDialogButtonBox
+    QThread, QTimer, QTranslator, QUrl, pyqtSignal, QIODevice, QDialogButtonBox, QStyle
 )
-from PyQt5.QtWidgets import QStyle  # Gives a nicer error message than import from Qt
 
 from calibre import as_unicode, prints
 from calibre.constants import (
@@ -1171,14 +1170,14 @@ class Application(QApplication):
 
     @property
     def current_custom_colors(self):
-        from PyQt5.Qt import QColorDialog
+        from qt.core import QColorDialog
 
         return [col.getRgb() for col in
                     (QColorDialog.customColor(i) for i in range(QColorDialog.customCount()))]
 
     @current_custom_colors.setter
     def current_custom_colors(self, colors):
-        from PyQt5.Qt import QColorDialog
+        from qt.core import QColorDialog
         num = min(len(colors), QColorDialog.customCount())
         for i in range(num):
             QColorDialog.setCustomColor(i, QColor(*colors[i]))
@@ -1386,7 +1385,7 @@ def elided_text(text, font=None, width=300, pos='middle'):
     rendered, replacing characters from the left, middle or right (as per pos)
     of the string with an ellipsis. Results in a string much closer to the
     limit than Qt's elidedText().'''
-    from PyQt5.Qt import QFontMetrics, QApplication
+    from qt.core import QFontMetrics, QApplication
     if font is None:
         font = QApplication.instance().font()
     fm = (font if isinstance(font, QFontMetrics) else QFontMetrics(font))

src/calibre/gui2/actions/__init__.py

@@ -9,7 +9,7 @@ __docformat__ = 'restructuredtext en'
 from functools import partial
 from zipfile import ZipFile
 
-from PyQt5.Qt import (QToolButton, QAction, QIcon, QObject, QMenu,
+from qt.core import (QToolButton, QAction, QIcon, QObject, QMenu,
         QKeySequence)
 
 from calibre import prints

src/calibre/gui2/actions/add.py

@@ -9,7 +9,7 @@ __docformat__ = 'restructuredtext en'
 import os
 from collections import defaultdict
 from functools import partial
-from PyQt5.Qt import QApplication, QDialog, QPixmap, QTimer
+from qt.core import QApplication, QDialog, QPixmap, QTimer
 
 from calibre import as_unicode, guess_type
 from calibre.constants import iswindows

src/calibre/gui2/actions/annotate.py

@@ -7,7 +7,7 @@ __copyright__ = '2010, Kovid Goyal <kovid@kovidgoyal.net>'
 __docformat__ = 'restructuredtext en'
 
 
-from PyQt5.Qt import pyqtSignal, QModelIndex, QThread, Qt
+from qt.core import pyqtSignal, QModelIndex, QThread, Qt
 
 from calibre.gui2 import error_dialog
 from calibre.gui2.actions import InterfaceAction

src/calibre/gui2/actions/author_mapper.py

@@ -3,7 +3,7 @@
 # License: GPLv3 Copyright: 2015, Kovid Goyal <kovid at kovidgoyal.net>
 
 
-from PyQt5.Qt import QDialog
+from qt.core import QDialog
 from calibre.gui2 import gprefs
 from calibre.gui2.actions import InterfaceAction
 from polyglot.builtins import iteritems, map, range

src/calibre/gui2/actions/browse_annots.py

@@ -4,7 +4,7 @@
 
 from __future__ import absolute_import, division, print_function, unicode_literals
 
-from PyQt5.Qt import Qt
+from qt.core import Qt
 
 from calibre.gui2 import error_dialog
 from calibre.gui2.actions import InterfaceAction

src/calibre/gui2/actions/catalog.py

@@ -8,7 +8,7 @@ __docformat__ = 'restructuredtext en'
 
 import re, os, shutil, errno
 
-from PyQt5.Qt import QModelIndex
+from qt.core import QModelIndex
 
 from calibre.gui2 import choose_dir, error_dialog, warning_dialog
 from calibre.gui2.tools import generate_catalog

src/calibre/gui2/actions/choose_library.py

@@ -9,7 +9,7 @@ __docformat__ = 'restructuredtext en'
 import os, posixpath, weakref, sys
 from functools import partial
 
-from PyQt5.Qt import (QMenu, Qt, QInputDialog, QToolButton, QDialog,
+from qt.core import (QMenu, Qt, QInputDialog, QToolButton, QDialog,
         QDialogButtonBox, QGridLayout, QLabel, QLineEdit, QIcon, QSize,
         QCoreApplication, pyqtSignal, QVBoxLayout, QTimer, QAction)
 

src/calibre/gui2/actions/convert.py

@@ -9,7 +9,7 @@ __docformat__ = 'restructuredtext en'
 import os
 from functools import partial
 
-from PyQt5.Qt import QModelIndex, QTimer
+from qt.core import QModelIndex, QTimer
 
 from calibre.gui2 import error_dialog, Dispatcher, gprefs
 from calibre.gui2.tools import convert_single_ebook, convert_bulk_ebook

src/calibre/gui2/actions/copy_to_library.py

@@ -12,7 +12,7 @@ from threading import Thread
 from contextlib import closing
 from collections import defaultdict
 
-from PyQt5.Qt import (
+from qt.core import (
     QToolButton, QDialog, QGridLayout, QIcon, QLabel, QDialogButtonBox,
     QApplication, QLineEdit, QHBoxLayout, QFormLayout, QCheckBox, QWidget,
     QScrollArea, QVBoxLayout, Qt, QListWidgetItem, QListWidget, QSize, QAbstractItemView)

src/calibre/gui2/actions/delete.py

@@ -10,7 +10,7 @@ import errno, os
 from functools import partial
 from collections import Counter
 
-from PyQt5.Qt import QObject, QTimer, QModelIndex, QDialog
+from qt.core import QObject, QTimer, QModelIndex, QDialog
 
 from calibre.constants import ismacos
 from calibre.gui2 import error_dialog, question_dialog

src/calibre/gui2/actions/device.py

@@ -6,7 +6,7 @@ __license__   = 'GPL v3'
 __copyright__ = '2010, Kovid Goyal <kovid@kovidgoyal.net>'
 __docformat__ = 'restructuredtext en'
 
-from PyQt5.Qt import QIcon, QMenu, QTimer, QToolButton, pyqtSignal
+from qt.core import QIcon, QMenu, QTimer, QToolButton, pyqtSignal
 
 from calibre.gui2 import info_dialog, question_dialog
 from calibre.gui2.actions import InterfaceAction

src/calibre/gui2/actions/edit_metadata.py

@@ -11,7 +11,7 @@ import os
 import shutil
 from functools import partial
 from io import BytesIO
-from PyQt5.Qt import (
+from qt.core import (
     QAction, QApplication, QDialog, QIcon, QMenu, QMimeData, QModelIndex, QTimer, QUrl
 )
 

src/calibre/gui2/actions/embed.py

@@ -7,7 +7,7 @@ __copyright__ = '2014, Kovid Goyal <kovid at kovidgoyal.net>'
 
 from functools import partial
 
-from PyQt5.Qt import QTimer, QProgressDialog, Qt
+from qt.core import QTimer, QProgressDialog, Qt
 
 from calibre import force_unicode
 from calibre.gui2 import gprefs

src/calibre/gui2/actions/fetch_news.py

@@ -9,7 +9,7 @@ __docformat__ = 'restructuredtext en'
 import gc
 from functools import partial
 
-from PyQt5.Qt import Qt
+from qt.core import Qt
 
 from calibre.gui2 import Dispatcher
 from calibre.gui2.tools import fetch_scheduled_recipe

src/calibre/gui2/actions/help.py

@@ -6,7 +6,7 @@ __license__   = 'GPL v3'
 __copyright__ = '2010, Kovid Goyal <kovid@kovidgoyal.net>'
 __docformat__ = 'restructuredtext en'
 
-from PyQt5.Qt import QUrl
+from qt.core import QUrl
 
 from calibre.gui2 import open_url
 from calibre.gui2.actions import InterfaceAction

src/calibre/gui2/actions/mark_books.py

@@ -7,7 +7,7 @@ __copyright__ = '2013, Kovid Goyal <kovid at kovidgoyal.net>'
 
 from functools import partial
 
-from PyQt5.Qt import QTimer, QApplication, Qt, QEvent
+from qt.core import QTimer, QApplication, Qt, QEvent
 
 from calibre.gui2 import error_dialog
 from calibre.gui2.actions import InterfaceAction

src/calibre/gui2/actions/plugin_updates.py

@@ -6,7 +6,7 @@ __license__   = 'GPL v3'
 __copyright__ = '2011, Grant Drake <grant.drake@gmail.com>'
 __docformat__ = 'restructuredtext en'
 
-from PyQt5.Qt import QApplication, Qt, QIcon
+from qt.core import QApplication, Qt, QIcon
 from calibre.gui2.actions import InterfaceAction
 from calibre.gui2.dialogs.plugin_updater import (PluginUpdaterDialog,
                                                  FILTER_ALL, FILTER_UPDATE_AVAILABLE)

src/calibre/gui2/actions/polish.py

@@ -11,7 +11,7 @@ from collections import OrderedDict
 from functools import partial
 from polyglot.builtins import iteritems, itervalues, map, unicode_type
 
-from PyQt5.Qt import (QDialog, QGridLayout, QIcon, QCheckBox, QLabel, QFrame,
+from qt.core import (QDialog, QGridLayout, QIcon, QCheckBox, QLabel, QFrame,
                       QApplication, QDialogButtonBox, Qt, QSize, QSpacerItem,
                       QSizePolicy, QTimer, QModelIndex, QTextEdit,
                       QInputDialog, QMenu)

src/calibre/gui2/actions/preferences.py

@@ -8,7 +8,7 @@ __docformat__ = 'restructuredtext en'
 
 from functools import partial
 
-from PyQt5.Qt import QIcon, Qt
+from qt.core import QIcon, Qt
 
 from calibre.gui2.actions import InterfaceAction
 from calibre.gui2.preferences.main import Preferences

src/calibre/gui2/actions/show_book_details.py

@@ -6,7 +6,7 @@ __license__   = 'GPL v3'
 __copyright__ = '2010, Kovid Goyal <kovid@kovidgoyal.net>'
 __docformat__ = 'restructuredtext en'
 
-from PyQt5.Qt import Qt
+from qt.core import Qt
 try:
     from PyQt5 import sip
 except ImportError:

src/calibre/gui2/actions/show_quickview.py

@@ -7,7 +7,7 @@ __copyright__ = '2010, Kovid Goyal <kovid@kovidgoyal.net>'
 __docformat__ = 'restructuredtext en'
 
 
-from PyQt5.Qt import QAction
+from qt.core import QAction
 
 from calibre.gui2.actions import InterfaceAction
 from calibre.gui2.dialogs.quickview import Quickview

src/calibre/gui2/actions/show_template_tester.py

@@ -7,7 +7,7 @@ __copyright__ = '2010, Kovid Goyal <kovid@kovidgoyal.net>'
 __docformat__ = 'restructuredtext en'
 
 
-from PyQt5.Qt import QDialog
+from qt.core import QDialog
 from calibre.gui2.actions import InterfaceAction
 from calibre.gui2.dialogs.template_dialog import TemplateDialog
 from calibre.gui2 import error_dialog

src/calibre/gui2/actions/similar_books.py

@@ -7,7 +7,7 @@ __copyright__ = '2010, Kovid Goyal <kovid@kovidgoyal.net>'
 __docformat__ = 'restructuredtext en'
 
 
-from PyQt5.Qt import QToolButton
+from qt.core import QToolButton
 
 from calibre.gui2.actions import InterfaceAction
 from polyglot.builtins import string_or_bytes

src/calibre/gui2/actions/sort.py

@@ -5,7 +5,7 @@
 __license__ = 'GPL v3'
 __copyright__ = '2013, Kovid Goyal <kovid at kovidgoyal.net>'
 
-from PyQt5.Qt import QToolButton, QAction, pyqtSignal, QIcon
+from qt.core import QToolButton, QAction, pyqtSignal, QIcon
 
 from calibre.gui2.actions import InterfaceAction
 from calibre.utils.icu import sort_key

src/calibre/gui2/actions/store.py

@@ -7,7 +7,7 @@ __docformat__ = 'restructuredtext en'
 
 from functools import partial
 
-from PyQt5.Qt import QIcon, QSize
+from qt.core import QIcon, QSize
 
 from calibre.gui2 import error_dialog
 from calibre.gui2.actions import InterfaceAction

src/calibre/gui2/actions/tag_mapper.py

@@ -3,7 +3,7 @@
 # License: GPLv3 Copyright: 2015, Kovid Goyal <kovid at kovidgoyal.net>
 
 
-from PyQt5.Qt import QDialog
+from qt.core import QDialog
 from polyglot.builtins import iteritems, map, range
 
 from calibre.gui2 import gprefs

src/calibre/gui2/actions/toc_edit.py

@@ -9,7 +9,7 @@ __docformat__ = 'restructuredtext en'
 import os
 from collections import OrderedDict
 
-from PyQt5.Qt import (QTimer, QDialog, QGridLayout, QCheckBox, QLabel,
+from qt.core import (QTimer, QDialog, QGridLayout, QCheckBox, QLabel,
                       QDialogButtonBox, QIcon)
 
 from calibre.gui2 import error_dialog, gprefs

src/calibre/gui2/actions/tweak_epub.py

@@ -8,7 +8,7 @@ __docformat__ = 'restructuredtext en'
 
 import time
 
-from PyQt5.Qt import QTimer, QDialog, QDialogButtonBox, QCheckBox, QVBoxLayout, QLabel, Qt
+from qt.core import QTimer, QDialog, QDialogButtonBox, QCheckBox, QVBoxLayout, QLabel, Qt
 
 from calibre.gui2 import error_dialog, question_dialog
 from calibre.gui2.actions import InterfaceAction

src/calibre/gui2/actions/unpack_book.py

@@ -8,7 +8,7 @@ __docformat__ = 'restructuredtext en'
 
 import os, weakref, shutil
 
-from PyQt5.Qt import (QDialog, QVBoxLayout, QHBoxLayout, QRadioButton, QFrame,
+from qt.core import (QDialog, QVBoxLayout, QHBoxLayout, QRadioButton, QFrame,
         QPushButton, QLabel, QGroupBox, QGridLayout, QIcon, QSize, QTimer)
 
 from calibre import as_unicode

src/calibre/gui2/actions/view.py

@@ -10,7 +10,7 @@ import json
 import os
 import time
 from functools import partial
-from PyQt5.Qt import QAction, QIcon, Qt, pyqtSignal, QDialog
+from qt.core import QAction, QIcon, Qt, pyqtSignal, QDialog
 
 from calibre.constants import ismacos, iswindows
 from calibre.gui2 import (

src/calibre/gui2/actions/virtual_library.py

@@ -2,7 +2,7 @@
 # vim:fileencoding=utf-8
 # License: GPLv3 Copyright: 2018, Kovid Goyal <kovid at kovidgoyal.net>
 
-from PyQt5.Qt import QToolButton, QAction
+from qt.core import QToolButton, QAction
 
 from calibre.gui2.actions import InterfaceAction
 

src/calibre/gui2/add.py

@@ -14,7 +14,7 @@ import traceback
 import weakref
 from collections import OrderedDict
 from io import BytesIO
-from PyQt5.Qt import QObject, Qt, pyqtSignal
+from qt.core import QObject, Qt, pyqtSignal
 from threading import Thread
 
 from calibre import as_unicode, prints

src/calibre/gui2/auto_add.py

@@ -10,7 +10,7 @@ import os, tempfile, shutil, time
 from threading import Thread, Event
 from polyglot.builtins import map
 
-from PyQt5.Qt import (QFileSystemWatcher, QObject, Qt, pyqtSignal, QTimer, QApplication, QCursor)
+from qt.core import (QFileSystemWatcher, QObject, Qt, pyqtSignal, QTimer, QApplication, QCursor)
 
 from calibre import prints
 from calibre.db.adding import filter_filename, compile_rule

src/calibre/gui2/bars.py

@@ -7,7 +7,7 @@ __copyright__ = '2011, Kovid Goyal <kovid@kovidgoyal.net>'
 __docformat__ = 'restructuredtext en'
 
 from functools import partial
-from PyQt5.Qt import (
+from qt.core import (
     Qt, QAction, QMenu, QObject, QToolBar, QToolButton, QSize, pyqtSignal, QKeySequence,
     QTimer, QPropertyAnimation, QEasingCurve, pyqtProperty, QPainter, QWidget, QPalette)
 try:

src/calibre/gui2/book_details.py

@@ -7,7 +7,7 @@ import os
 import re
 from collections import namedtuple
 from functools import partial
-from PyQt5.Qt import (
+from qt.core import (
     QAction, QApplication, QColor, QEasingCurve, QIcon, QKeySequence, QLayout, QMenu,
     QMimeData, QPainter, QPen, QPixmap, QPropertyAnimation, QRect, QSize, QClipboard,
     QSizePolicy, Qt, QUrl, QWidget, pyqtProperty, pyqtSignal

src/calibre/gui2/catalog/catalog_bibtex.py

@@ -7,7 +7,7 @@ __copyright__ = '2009, Kovid Goyal <kovid@kovidgoyal.net>'
 __docformat__ = 'restructuredtext en'
 
 
-from PyQt5.Qt import QWidget, QListWidgetItem
+from qt.core import QWidget, QListWidgetItem
 
 from calibre.gui2 import gprefs
 from calibre.gui2.catalog.catalog_bibtex_ui import Ui_Form

src/calibre/gui2/catalog/catalog_csv_xml.py

@@ -6,7 +6,7 @@ __license__   = 'GPL v3'
 __copyright__ = '2009, Kovid Goyal <kovid@kovidgoyal.net>'
 __docformat__ = 'restructuredtext en'
 
-from PyQt5.Qt import QWidget, QListWidgetItem, Qt, QVBoxLayout, QLabel, QListWidget, QAbstractItemView
+from qt.core import QWidget, QListWidgetItem, Qt, QVBoxLayout, QLabel, QListWidget, QAbstractItemView
 
 from calibre.constants import ismacos
 from calibre.gui2 import gprefs

src/calibre/gui2/catalog/catalog_epub_mobi.py

@@ -18,7 +18,7 @@ from calibre.utils.localization import localize_user_manual_link
 from polyglot.builtins import native_string_type, unicode_type, zip, range
 
 from .catalog_epub_mobi_ui import Ui_Form
-from PyQt5.Qt import (Qt, QAbstractItemView, QCheckBox, QComboBox,
+from qt.core import (Qt, QAbstractItemView, QCheckBox, QComboBox,
         QDoubleSpinBox, QIcon, QInputDialog, QLineEdit, QRadioButton,
         QSize, QSizePolicy, QTableWidget, QTableWidgetItem, QTextEdit, QToolButton,
         QUrl, QVBoxLayout, QWidget)

src/calibre/gui2/comments_editor.py

@@ -11,7 +11,7 @@ from contextlib import contextmanager
 
 from html5_parser import parse
 from lxml import html
-from PyQt5.Qt import (
+from qt.core import (
     QAction, QApplication, QBrush, QByteArray, QCheckBox, QColor, QColorDialog,
     QDialog, QDialogButtonBox, QFont, QFontInfo, QFontMetrics, QFormLayout,
     QHBoxLayout, QIcon, QKeySequence, QLabel, QLineEdit, QMenu, QPalette,

src/calibre/gui2/complete2.py

@@ -6,7 +6,7 @@ __license__   = 'GPL v3'
 __copyright__ = '2012, Kovid Goyal <kovid@kovidgoyal.net>'
 __docformat__ = 'restructuredtext en'
 
-from PyQt5.Qt import (
+from qt.core import (
     QLineEdit, QAbstractListModel, Qt, pyqtSignal, QObject, QKeySequence, QAbstractItemView,
     QApplication, QListView, QPoint, QModelIndex, QEvent,
     QStyleOptionComboBox, QStyle, QComboBox, QTimer)
@@ -519,7 +519,7 @@ class EditWithComplete(EnComboBox):
 
 
 if __name__ == '__main__':
-    from PyQt5.Qt import QDialog, QVBoxLayout
+    from qt.core import QDialog, QVBoxLayout
     from calibre.gui2 import Application
     app = Application([])
     d = QDialog()

src/calibre/gui2/convert/__init__.py

@@ -9,7 +9,7 @@ __docformat__ = 'restructuredtext en'
 import textwrap, codecs, importlib
 from functools import partial
 
-from PyQt5.Qt import (QWidget, QSpinBox, QDoubleSpinBox, QLineEdit, QTextEdit,
+from qt.core import (QWidget, QSpinBox, QDoubleSpinBox, QLineEdit, QTextEdit,
     QCheckBox, QComboBox, Qt, QIcon, pyqtSignal, QLabel, QFontComboBox, QFont,
     QFontInfo, QPlainTextEdit)
 

src/calibre/gui2/convert/bulk.py

@@ -7,7 +7,7 @@ __docformat__ = 'restructuredtext en'
 
 import shutil
 
-from PyQt5.Qt import QModelIndex, QDialog, QApplication, QDialogButtonBox
+from qt.core import QModelIndex, QDialog, QApplication, QDialogButtonBox
 
 from calibre.gui2.convert.single import Config, GroupModel, gprefs
 from calibre.gui2.convert.look_and_feel import LookAndFeelWidget

src/calibre/gui2/convert/docx_output.py

@@ -5,7 +5,7 @@ __license__ = 'GPL 3'
 __copyright__ = '2009, John Schember <john@nachtimwald.com>'
 __docformat__ = 'restructuredtext en'
 
-from PyQt5.Qt import QFormLayout, QComboBox, QCheckBox, QLineEdit, QDoubleSpinBox, QSizePolicy
+from qt.core import QFormLayout, QComboBox, QCheckBox, QLineEdit, QDoubleSpinBox, QSizePolicy
 
 from calibre.gui2.convert import Widget
 from calibre.ebooks.conversion.config import OPTIONS

src/calibre/gui2/convert/font_key.py

@@ -6,7 +6,7 @@ __license__   = 'GPL v3'
 __copyright__ = '2009, Kovid Goyal <kovid@kovidgoyal.net>'
 __docformat__ = 'restructuredtext en'
 
-from PyQt5.Qt import QDialog, QDialogButtonBox
+from qt.core import QDialog, QDialogButtonBox
 
 from calibre.gui2.convert.font_key_ui import Ui_Dialog
 from calibre.utils.localization import localize_user_manual_link
@@ -102,7 +102,7 @@ class FontKeyChooser(QDialog, Ui_Dialog):
 
 
 if __name__ == '__main__':
-    from PyQt5.Qt import QApplication
+    from qt.core import QApplication
     app = QApplication([])
     d = FontKeyChooser()
     d.exec_()

src/calibre/gui2/convert/heuristics.py

@@ -5,7 +5,7 @@ __license__ = 'GPL 3'
 __copyright__ = '2011, John Schember <john@nachtimwald.com>'
 __docformat__ = 'restructuredtext en'
 
-from PyQt5.Qt import Qt
+from qt.core import Qt
 
 from calibre.gui2 import gprefs
 from calibre.gui2.convert.heuristics_ui import Ui_Form

src/calibre/gui2/convert/look_and_feel.py

@@ -8,7 +8,7 @@ __docformat__ = 'restructuredtext en'
 
 import json
 
-from PyQt5.Qt import Qt, QDialog
+from qt.core import Qt, QDialog
 
 from calibre.gui2.convert.look_and_feel_ui import Ui_Form
 from calibre.gui2.convert import Widget

src/calibre/gui2/convert/metadata.py

@@ -8,7 +8,7 @@ __docformat__ = 'restructuredtext en'
 
 import os, re, errno
 
-from PyQt5.Qt import QPixmap
+from qt.core import QPixmap
 
 from calibre.gui2 import choose_images, error_dialog
 from calibre.gui2.convert.metadata_ui import Ui_Form

src/calibre/gui2/convert/page_setup.py

@@ -6,7 +6,7 @@ __license__   = 'GPL v3'
 __copyright__ = '2009, Kovid Goyal <kovid@kovidgoyal.net>'
 __docformat__ = 'restructuredtext en'
 
-from PyQt5.Qt import Qt, QAbstractListModel, QModelIndex, QItemSelectionModel
+from qt.core import Qt, QAbstractListModel, QModelIndex, QItemSelectionModel
 
 from calibre.gui2.convert.page_setup_ui import Ui_Form
 from calibre.gui2.convert import Widget

src/calibre/gui2/convert/pdf_output.py

@@ -6,7 +6,7 @@ __copyright__ = '2009, John Schember <john@nachtimwald.com>'
 __docformat__ = 'restructuredtext en'
 
 
-from PyQt5.Qt import QHBoxLayout, QFormLayout, QDoubleSpinBox, QCheckBox, QVBoxLayout
+from qt.core import QHBoxLayout, QFormLayout, QDoubleSpinBox, QCheckBox, QVBoxLayout
 
 from calibre.gui2.convert.pdf_output_ui import Ui_Form
 from calibre.gui2.convert import Widget

src/calibre/gui2/convert/regex_builder.py

@@ -7,7 +7,7 @@ __docformat__ = 'restructuredtext en'
 
 import os
 
-from PyQt5.Qt import (QDialog, QWidget, QDialogButtonBox, QApplication,
+from qt.core import (QDialog, QWidget, QDialogButtonBox, QApplication,
         QBrush, QTextCursor, QTextEdit, QByteArray, Qt, pyqtSignal)
 
 from calibre.gui2.convert.regex_builder_ui import Ui_RegexBuilder

src/calibre/gui2/convert/search_and_replace.py

@@ -7,7 +7,7 @@ __docformat__ = 'restructuredtext en'
 
 import codecs, json
 
-from PyQt5.Qt import Qt, QTableWidgetItem
+from qt.core import Qt, QTableWidgetItem
 
 from calibre.gui2.convert.search_and_replace_ui import Ui_Form
 from calibre.gui2.convert import Widget

src/calibre/gui2/convert/single.py

@@ -5,7 +5,7 @@
 
 import shutil
 
-from PyQt5.Qt import (
+from qt.core import (
     QAbstractListModel, QCheckBox, QComboBox, QCoreApplication, QDialog,
     QDialogButtonBox, QFont, QFrame, QGridLayout, QHBoxLayout, QIcon, QLabel,
     QListView, QModelIndex, QScrollArea, QSize, QSizePolicy, QSpacerItem,

src/calibre/gui2/convert/txt_input.py

@@ -5,7 +5,7 @@ __license__ = 'GPL 3'
 __copyright__ = '2009, John Schember <john@nachtimwald.com>'
 __docformat__ = 'restructuredtext en'
 
-from PyQt5.Qt import QListWidgetItem, Qt
+from qt.core import QListWidgetItem, Qt
 
 from calibre.gui2.convert.txt_input_ui import Ui_Form
 from calibre.gui2.convert import Widget

src/calibre/gui2/convert/xpath_wizard.py

@@ -6,7 +6,7 @@ __license__   = 'GPL v3'
 __copyright__ = '2009, Kovid Goyal <kovid@kovidgoyal.net>'
 __docformat__ = 'restructuredtext en'
 
-from PyQt5.Qt import QDialog, QWidget, Qt, QDialogButtonBox, QVBoxLayout
+from qt.core import QDialog, QWidget, Qt, QDialogButtonBox, QVBoxLayout
 
 from calibre.gui2.convert.xpath_wizard_ui import Ui_Form
 from calibre.gui2.convert.xexp_edit_ui import Ui_Form as Ui_Edit
@@ -108,7 +108,7 @@ class XPathEdit(QWidget, Ui_Edit):
 
 
 if __name__ == '__main__':
-    from PyQt5.Qt import QApplication
+    from qt.core import QApplication
     app = QApplication([])
     w = XPathEdit()
     w.setObjectName('test')

src/calibre/gui2/cover_flow.py

@@ -11,7 +11,7 @@ Module to implement the Cover Flow feature
 
 import sys, os, time
 
-from PyQt5.Qt import (QImage, QSizePolicy, QTimer, QDialog, Qt, QSize, QAction,
+from qt.core import (QImage, QSizePolicy, QTimer, QDialog, Qt, QSize, QAction,
         QStackedLayout, QLabel, pyqtSignal, QKeySequence, QFont, QApplication, QItemSelectionModel)
 
 from calibre.ebooks.metadata import rating_to_stars
@@ -444,7 +444,7 @@ class CoverFlowMixin(object):
 
 
 def test():
-    from PyQt5.Qt import QMainWindow
+    from qt.core import QMainWindow
     app = QApplication([])
     w = QMainWindow()
     cf = CoverFlow()
@@ -465,7 +465,7 @@ def main(args=sys.argv):
 
 
 if __name__ == '__main__':
-    from PyQt5.Qt import QMainWindow
+    from qt.core import QMainWindow
     app = QApplication([])
     w = QMainWindow()
     cf = CoverFlow()

src/calibre/gui2/covers.py

@@ -7,7 +7,7 @@ __copyright__ = '2014, Kovid Goyal <kovid at kovidgoyal.net>'
 
 from collections import OrderedDict
 
-from PyQt5.Qt import (
+from qt.core import (
     QWidget, QHBoxLayout, QTabWidget, QLabel, QSizePolicy, QSize, QFormLayout,
     QSpinBox, pyqtSignal, QPixmap, QDialog, QVBoxLayout, QDialogButtonBox,
     QListWidget, QListWidgetItem, Qt, QGridLayout, QPushButton, QIcon, QApplication,

src/calibre/gui2/css_transform_rules.py

@@ -3,7 +3,7 @@
 # License: GPLv3 Copyright: 2016, Kovid Goyal <kovid at kovidgoyal.net>
 
 
-from PyQt5.Qt import (
+from qt.core import (
     QWidget, QVBoxLayout, QHBoxLayout, QLabel, QComboBox, QLineEdit,
     QPushButton, QSize, pyqtSignal, QMenu, QDialogButtonBox, QTextCursor
 )

src/calibre/gui2/custom_column_widgets.py

@@ -9,7 +9,7 @@ __docformat__ = 'restructuredtext en'
 import os
 from functools import partial
 
-from PyQt5.Qt import (Qt, QComboBox, QLabel, QSpinBox, QDoubleSpinBox,
+from qt.core import (Qt, QComboBox, QLabel, QSpinBox, QDoubleSpinBox,
         QDateTime, QGroupBox, QVBoxLayout, QSizePolicy, QGridLayout, QUrl,
         QSpacerItem, QIcon, QCheckBox, QWidget, QHBoxLayout, QLineEdit,
         QMessageBox, QToolButton, QPlainTextEdit, QApplication, QStyle, QDialog)

src/calibre/gui2/dbus_export/demo.py

@@ -7,7 +7,7 @@ __copyright__ = '2014, Kovid Goyal <kovid at kovidgoyal.net>'
 
 import time
 
-from PyQt5.Qt import (
+from qt.core import (
     QApplication, QMainWindow, QVBoxLayout, Qt, QKeySequence, QAction, QEvent, QStyle,
     QActionGroup, QMenu, QPushButton, QWidget, QTimer, QMessageBox, pyqtSignal)
 

src/calibre/gui2/dbus_export/menu.py

@@ -9,7 +9,7 @@ __copyright__ = '2014, Kovid Goyal <kovid at kovidgoyal.net>'
 # dbus-menu.xml from the libdbusmenu project https://launchpad.net/libdbusmenu
 
 import dbus, sip
-from PyQt5.Qt import (
+from qt.core import (
     QApplication, QMenu, QIcon, QKeySequence, QObject, QEvent, QTimer, pyqtSignal, Qt)
 
 from calibre.utils.dbus_service import Object, BusName, method as dbus_method, dbus_property, signal as dbus_signal

src/calibre/gui2/dbus_export/menu2.py

@@ -13,7 +13,7 @@ __copyright__ = '2014, Kovid Goyal <kovid at kovidgoyal.net>'
 # Partial spec: https://wiki.gnome.org/Projects/GLib/GApplication/DBusAPI
 
 import dbus
-from PyQt5.Qt import QObject, pyqtSignal, QTimer, Qt
+from qt.core import QObject, pyqtSignal, QTimer, Qt
 
 from calibre.utils.dbus_service import Object, method as dbus_method, signal as dbus_signal
 from calibre.gui2.dbus_export.utils import set_X_window_properties

src/calibre/gui2/dbus_export/tray.py

@@ -14,7 +14,7 @@ __copyright__ = '2014, Kovid Goyal <kovid at kovidgoyal.net>'
 import os
 
 import dbus
-from PyQt5.Qt import (
+from qt.core import (
     QApplication, QObject, pyqtSignal, Qt, QPoint, QRect, QMenu,
     QSystemTrayIcon, QIcon)
 

src/calibre/gui2/dbus_export/utils.py

@@ -9,7 +9,7 @@ import sys, array, re, os, errno
 
 import dbus
 
-from PyQt5.Qt import QSize, QImage, Qt, QKeySequence, QBuffer, QByteArray, QIODevice
+from qt.core import QSize, QImage, Qt, QKeySequence, QBuffer, QByteArray, QIODevice
 
 from polyglot.builtins import unicode_type, iteritems
 

src/calibre/gui2/dbus_export/widgets.py

@@ -7,7 +7,7 @@ __copyright__ = '2014, Kovid Goyal <kovid at kovidgoyal.net>'
 
 import time, sys, weakref
 
-from PyQt5.Qt import (
+from qt.core import (
     QObject, QMenuBar, QAction, QEvent, QSystemTrayIcon, QApplication, Qt)
 
 from calibre.constants import iswindows, ismacos

src/calibre/gui2/device.py

@@ -7,7 +7,7 @@ __copyright__ = '2008, Kovid Goyal <kovid at kovidgoyal.net>'
 import os, traceback, time, io, re, sys, weakref
 from threading import Thread, Event
 
-from PyQt5.Qt import (
+from qt.core import (
     QMenu, QAction, QActionGroup, QIcon, Qt, pyqtSignal, QDialog,
     QObject, QVBoxLayout, QDialogButtonBox, QCursor, QCoreApplication,
     QApplication, QEventLoop, QTimer)

src/calibre/gui2/device_drivers/configwidget.py

@@ -7,7 +7,7 @@ __docformat__ = 'restructuredtext en'
 
 import textwrap
 
-from PyQt5.Qt import (QWidget, QListWidgetItem, Qt, QLabel,
+from qt.core import (QWidget, QListWidgetItem, Qt, QLabel,
         QLineEdit, QCheckBox, QComboBox)
 
 from calibre.gui2 import error_dialog, question_dialog

src/calibre/gui2/device_drivers/mtp_config.py

@@ -8,7 +8,7 @@ __docformat__ = 'restructuredtext en'
 
 import weakref
 
-from PyQt5.Qt import (QWidget, QListWidgetItem, Qt, QToolButton, QLabel,
+from qt.core import (QWidget, QListWidgetItem, Qt, QToolButton, QLabel,
         QTabWidget, QGridLayout, QListWidget, QIcon, QLineEdit, QVBoxLayout,
         QPushButton, QGroupBox, QScrollArea, QHBoxLayout, QComboBox,
         pyqtSignal, QSizePolicy, QDialog, QDialogButtonBox, QPlainTextEdit,

src/calibre/gui2/device_drivers/mtp_folder_browser.py

@@ -8,7 +8,7 @@ __docformat__ = 'restructuredtext en'
 
 from operator import attrgetter
 
-from PyQt5.Qt import (QTabWidget, QTreeWidget, QTreeWidgetItem, Qt, QDialog,
+from qt.core import (QTabWidget, QTreeWidget, QTreeWidgetItem, Qt, QDialog,
         QDialogButtonBox, QVBoxLayout, QSize, pyqtSignal, QIcon, QLabel)
 
 from calibre.gui2 import file_icon_provider

src/calibre/gui2/device_drivers/tabbed_device_config.py

@@ -7,7 +7,7 @@ __docformat__ = 'restructuredtext en'
 
 import weakref, textwrap
 
-from PyQt5.Qt import (
+from qt.core import (
     QWidget, QLabel, QTabWidget, QGridLayout, QLineEdit, QVBoxLayout,
     QGroupBox, QComboBox, QSizePolicy, QDialog, QDialogButtonBox, QCheckBox,
     QSpacerItem)

src/calibre/gui2/dialogs/add_empty_book.py

@@ -6,7 +6,7 @@ __docformat__ = 'restructuredtext en'
 __license__   = 'GPL v3'
 
 
-from PyQt5.Qt import (
+from qt.core import (
     QDialog, QGridLayout, QLabel, QDialogButtonBox,  QApplication, QSpinBox,
     QToolButton, QIcon, QLineEdit, QComboBox, QCheckBox)
 from calibre.ebooks.metadata import string_to_authors

src/calibre/gui2/dialogs/add_from_isbn.py

@@ -8,7 +8,7 @@ __docformat__ = 'restructuredtext en'
 
 import os
 
-from PyQt5.Qt import (
+from qt.core import (
     QDialog, QApplication, QIcon, QVBoxLayout, QHBoxLayout, QDialogButtonBox,
     QPlainTextEdit, QPushButton, QLabel, QLineEdit, Qt
 )

src/calibre/gui2/dialogs/authors_edit.py

@@ -7,7 +7,7 @@ __copyright__ = '2013, Kovid Goyal <kovid at kovidgoyal.net>'
 
 from collections import OrderedDict
 
-from PyQt5.Qt import (
+from qt.core import (
     QDialog, QGridLayout, QDialogButtonBox, QListWidget, QApplication, Qt,
     pyqtSignal, QSize, QPushButton, QIcon, QStyledItemDelegate, QLabel, QAbstractItemView)
 

src/calibre/gui2/dialogs/book_info.py

@@ -3,7 +3,7 @@
 
 
 import textwrap
-from PyQt5.Qt import (
+from qt.core import (
     QAction, QApplication, QBrush, QCheckBox, QCoreApplication, QDialog, QGridLayout,
     QHBoxLayout, QIcon, QKeySequence, QLabel, QListView, QModelIndex, QPalette,
     QPixmap, QPushButton, QShortcut, QSize, QSplitter, Qt, QTimer, QToolButton,

src/calibre/gui2/dialogs/catalog.py

@@ -8,7 +8,7 @@ __docformat__ = 'restructuredtext en'
 
 import os, sys, importlib, weakref
 
-from PyQt5.Qt import QDialog, QCoreApplication, QSize, QScrollArea, QApplication, QDialogButtonBox
+from qt.core import QDialog, QCoreApplication, QSize, QScrollArea, QApplication, QDialogButtonBox
 
 from calibre.customize.ui import config
 from calibre.gui2.dialogs.catalog_ui import Ui_Dialog
@@ -218,7 +218,7 @@ class Catalog(QDialog, Ui_Dialog):
         To add help functionality for a specific format:
         In gui2.catalog.catalog_<format>.py, add the following:
             from calibre.gui2 import open_url
-            from PyQt5.Qt import QUrl
+            from qt.core import QUrl
 
         In the PluginWidget() class, add this method:
             def show_help(self):

src/calibre/gui2/dialogs/check_library.py

@@ -8,7 +8,7 @@ __license__   = 'GPL v3'
 import os
 from threading import Thread
 
-from PyQt5.Qt import (
+from qt.core import (
     QDialog, QVBoxLayout, QHBoxLayout, QTreeWidget, QLabel, QPushButton,
     QApplication, QTreeWidgetItem, QLineEdit, Qt, QSize,
     QTimer, QIcon, QTextEdit, QSplitter, QWidget, QGridLayout, pyqtSignal)

src/calibre/gui2/dialogs/choose_format.py

@@ -5,7 +5,7 @@ __copyright__ = '2008, Kovid Goyal <kovid at kovidgoyal.net>'
 
 from functools import partial
 
-from PyQt5.Qt import (
+from qt.core import (
     QDialog, QListWidgetItem, QModelIndex, QIcon, QLabel, QVBoxLayout, QSize,
     QDialogButtonBox, QListWidget, QHBoxLayout, QPushButton, QMenu)
 

src/calibre/gui2/dialogs/choose_format_device.py

@@ -3,7 +3,7 @@
 __license__   = 'GPL v3'
 __copyright__ = '2011, John Schember <john@nachtimwald.com>'
 
-from PyQt5.Qt import QDialog, QTreeWidgetItem, QIcon, QModelIndex
+from qt.core import QDialog, QTreeWidgetItem, QIcon, QModelIndex
 
 from calibre.gui2 import file_icon_provider
 from calibre.gui2.dialogs.choose_format_device_ui import Ui_ChooseFormatDeviceDialog

src/calibre/gui2/dialogs/choose_library.py

@@ -9,7 +9,7 @@ __docformat__ = 'restructuredtext en'
 import os, errno
 from threading import Thread, Event
 
-from PyQt5.Qt import QDialog, QTimer, Qt, pyqtSignal
+from qt.core import QDialog, QTimer, Qt, pyqtSignal
 
 from calibre.gui2.dialogs.choose_library_ui import Ui_Dialog
 from calibre.gui2.dialogs.progress import ProgressDialog as PD

src/calibre/gui2/dialogs/choose_plugin_toolbars.py

@@ -7,7 +7,7 @@ __docformat__ = 'restructuredtext en'
 __license__   = 'GPL v3'
 
 
-from PyQt5.Qt import (QDialog, QVBoxLayout, QLabel, QDialogButtonBox,
+from qt.core import (QDialog, QVBoxLayout, QLabel, QDialogButtonBox,
             QListWidget, QAbstractItemView, QSizePolicy)
 
 

src/calibre/gui2/dialogs/comments_dialog.py

@@ -5,7 +5,7 @@ __copyright__ = '2008, Kovid Goyal kovid@kovidgoyal.net'
 __docformat__ = 'restructuredtext en'
 __license__   = 'GPL v3'
 
-from PyQt5.Qt import Qt, QDialog, QDialogButtonBox, QVBoxLayout, QPlainTextEdit, QSize, QApplication
+from qt.core import Qt, QDialog, QDialogButtonBox, QVBoxLayout, QPlainTextEdit, QSize, QApplication
 
 from calibre.gui2 import gprefs, Application
 from calibre.gui2.dialogs.comments_dialog_ui import Ui_CommentsDialog