Fix lint.

noisicaa/logging.py

@@ -182,11 +182,11 @@ class LogManager:
         return handler
 
     __qtLevelMap = {
-        QtCore.QtDebugMsg: logging.DEBUG,
-        QtCore.QtInfoMsg: logging.INFO,
-        QtCore.QtWarningMsg: logging.WARNING,
-        QtCore.QtCriticalMsg: logging.ERROR,
-        QtCore.QtFatalMsg: logging.CRITICAL,
+        QtCore.QtMsgType.QtDebugMsg: logging.DEBUG,
+        QtCore.QtMsgType.QtInfoMsg: logging.INFO,
+        QtCore.QtMsgType.QtWarningMsg: logging.WARNING,
+        QtCore.QtMsgType.QtCriticalMsg: logging.ERROR,
+        QtCore.QtMsgType.QtFatalMsg: logging.CRITICAL,
     }
 
     def __qtMessageHandler(
@@ -203,12 +203,12 @@ class LogManager:
             logger = logging.getLogger(loggerName)
             record = logger.makeRecord(
                 name=loggerName,
-                level=self.__qtLevelMap[msg_type],
+                level=self.__qtLevelMap.get(msg_type, logging.ERROR),
                 fn=context.file,
                 lno=context.line,
                 msg=msg, args=(),
                 exc_info=None,
                 func=context.function)
             logger.handle(record)
-        except:
+        except:  # pylint: disable=bare-except
             traceback.print_exc()

noisicaa/ui/DeviceDB.py

@@ -101,7 +101,7 @@ class DeviceDB(QtCore.QAbstractListModel):
         # TODO: remove when dynamic device updates get implemented.
         # ('duplicate' devices are added when the jack backend gets restarted)
         if idx < len(self.__devices) and self.__devices[idx].name == device.name:
-            return None
+            return
 
         assert idx >= len(self.__devices) or self.__devices[idx].name != device.name, (
             "Device {} already exists".format(device.name))