Fix linting.

pyleco/utils/message_handler.py

@@ -171,8 +171,11 @@ def _send(self, receiver: Union[bytes, str], sender: Union[bytes, str] = b"",
         else:
             self._send_message(message)
 
-    def send(self, receiver: Union[bytes, str], data: Optional[Any] = None,
-             conversation_id: Optional[bytes] = None, **kwargs) -> None:
+    def send(self,
+             receiver: Union[bytes, str],
+             conversation_id: Optional[bytes] = None,
+             data: Optional[Any] = None,
+             **kwargs) -> None:
         """Send a message to a receiver with serializable `data`."""
         self._send(receiver=receiver, data=data, conversation_id=conversation_id, **kwargs)
 

tests/utils/test_message_handler.py

@@ -428,7 +428,7 @@ def test_loop_element_does_not_change_heartbeat_if_short(self, handler_l: Messag
     def test_KeyboardInterrupt_in_loop(self, handler: MessageHandler):
         def raise_error(poller, waiting_time):
             raise KeyboardInterrupt
-        handler.sign_in = MagicMock()
+        handler.sign_in = MagicMock()  # type: ignore[method-assign]
         handler._listen_loop_element = raise_error  # type: ignore
         handler.listen()
         # assert that no error is raised and that the test does not hang