change several implicit conversion into explicit conversion

labelImg.py

@@ -210,7 +210,7 @@ def __init__(self, default_filename=None, default_prefdef_class_file=None, defau
         self.file_dock.setFeatures(QDockWidget.DockWidgetFloatable)
 
         self.dock_features = QDockWidget.DockWidgetClosable | QDockWidget.DockWidgetFloatable
-        self.dock.setFeatures(self.dock.features() ^ self.dock_features)
+        self.dock.setFeatures(self.dock.features() ^ int(self.dock_features))
 
         # Actions
         action = partial(new_action, self)

libs/canvas.py

@@ -165,7 +165,7 @@ def mouseMoveEvent(self, ev):
             return
 
         # Polygon copy moving.
-        if Qt.RightButton & ev.buttons():
+        if bool(Qt.RightButton) & bool(ev.buttons()):
             if self.selected_shape_copy and self.prev_point:
                 self.override_cursor(CURSOR_MOVE)
                 self.bounded_move_shape(self.selected_shape_copy, pos)
@@ -176,7 +176,7 @@ def mouseMoveEvent(self, ev):
             return
 
         # Polygon/Vertex moving.
-        if Qt.LeftButton & ev.buttons():
+        if bool(Qt.LeftButton) & bool(ev.buttons()):
             if self.selected_vertex():
                 self.bounded_move_vertex(pos)
                 self.shapeMoved.emit()