gui: remove pyqt4 support code

artiq/gui/datasets.py

@@ -10,11 +10,6 @@ from pyqtgraph import LayoutWidget
 from artiq.tools import short_format
 from artiq.gui.models import DictSyncTreeSepModel
 
-try:
-    QSortFilterProxyModel = QtCore.QSortFilterProxyModel
-except AttributeError:
-    QSortFilterProxyModel = QtGui.QSortFilterProxyModel
-
 
 logger = logging.getLogger(__name__)
 
@@ -63,6 +58,6 @@ class DatasetsDock(dockarea.Dock):
 
     def set_model(self, model):
         self.table_model = model
-        self.table_model_filter = QSortFilterProxyModel()
+        self.table_model_filter = QtCore.QSortFilterProxyModel()
         self.table_model_filter.setSourceModel(self.table_model)
         self.table.setModel(self.table_model_filter)

artiq/gui/log.py

@@ -8,11 +8,6 @@ from pyqtgraph import dockarea, LayoutWidget
 
 from artiq.gui.tools import log_level_to_name
 
-try:
-    QSortFilterProxyModel = QtCore.QSortFilterProxyModel
-except AttributeError:
-    QSortFilterProxyModel = QtGui.QSortFilterProxyModel
-
 
 class Model(QtCore.QAbstractTableModel):
     def __init__(self, init):
@@ -107,9 +102,9 @@ class Model(QtCore.QAbstractTableModel):
                     return v[3]
 
 
-class _LogFilterProxyModel(QSortFilterProxyModel):
+class _LogFilterProxyModel(QtCore.QSortFilterProxyModel):
     def __init__(self, min_level, freetext):
-        QSortFilterProxyModel.__init__(self)
+        QtCore.QSortFilterProxyModel.__init__(self)
         self.min_level = min_level
         self.freetext = freetext
 

artiq/gui/shortcuts.py

@@ -1,13 +1,8 @@
 import logging
 from functools import partial
 
-from quamash import QtGui, QtCore
+from quamash import QtGui, QtCore, QtWidgets
 from pyqtgraph import dockarea
-try:
-    from quamash import QtWidgets
-    QShortcut = QtWidgets.QShortcut
-except:
-    QShortcut = QtGui.QShortcut
 
 
 logger = logging.getLogger(__name__)
@@ -66,7 +61,7 @@ class ShortcutsDock(dockarea.Dock):
                 "open": open,
                 "submit": submit
             }
-            shortcut = QShortcut("F" + str(i+1), main_window)
+            shortcut = QtWidgets.QShortcut("F" + str(i+1), main_window)
             shortcut.setContext(QtCore.Qt.ApplicationShortcut)
             shortcut.activated.connect(partial(self._activated, i))