frappy.client.interactive: cosmetic fixes

frappy/client/interactive.py

@@ -240,7 +240,7 @@ class Module:
                 self._driving_event.clear()
         try:
             loop()
-        except KeyboardInterrupt as e:
+        except KeyboardInterrupt:
             self._secnode.log.info('-- interrupted --')
             try:
                 self.stop()
@@ -255,8 +255,8 @@ class Module:
         finally:
             self._secnode.readParameter(self._name, 'value')
             for pname in watch_params:
-                self._secnode.unregister_callback((self._name, pname),
-                                                  updateEvent=self._watch_parameter)
+                self._secnode.unregister_callback(
+                    (self._name, pname), updateEvent=self._watch_parameter)
         return self.value
 
     def __repr__(self):