diff --git a/app/src/infos.py b/app/src/infos.py
index 4e3c7af..85c99e5 100644
--- a/app/src/infos.py
+++ b/app/src/infos.py
@@ -203,8 +203,7 @@ class Infos:
                 if 'val_tpl' in ha:
                     attr['val_tpl'] = ha['val_tpl']
                 elif 'fmt' in ha:
-                    attr['val_tpl'] = '{{value_json' + f"['{row['name'][-1]}']"
-                    " {ha['fmt']}" + '}}'       # eg.   'val_tpl': "{{ value_json['Output_Power']|float }} # noqa: E501
+                    attr['val_tpl'] = '{{value_json' + f"['{row['name'][-1]}'] {ha['fmt']}" + '}}'       # eg.   'val_tpl': "{{ value_json['Output_Power']|float }} # noqa: E501
                 else:
                     self.inc_counter('Internal_Error')
                     logging.error(f"Infos.__info_defs: the row for {key} do"
diff --git a/app/src/inverter.py b/app/src/inverter.py
index f578202..0d645d4 100644
--- a/app/src/inverter.py
+++ b/app/src/inverter.py
@@ -76,10 +76,8 @@ class Inverter(AsyncStream):
         for data_json, component, node_id, id in cls.db_stat.ha_confs(
                  cls.entity_prfx, cls.proxy_node_id,
                  cls.proxy_unique_id, True):
-            logger_mqtt.debug(f'''MQTT Register: cmp:'{component}' node_id:'
-{node_id}' {data_json}''')
-            await cls.mqtt.publish(f'''{cls.discovery_prfx}{component}
-/{node_id}{id}/config''', data_json)
+            logger_mqtt.debug(f"MQTT Register: cmp:'{component}' node_id:'{node_id}' {data_json}")      # noqa: E501
+            await cls.mqtt.publish(f'{cls.discovery_prfx}{component}/{node_id}{id}/config', data_json)  # noqa: E501
 
     @classmethod
     async def __async_publ_mqtt_proxy_stat(cls, key) -> None:
@@ -185,8 +183,7 @@ class Inverter(AsyncStream):
             data_json = json.dumps(db[key])
             node_id = self.node_id
             logger_mqtt.debug(f'{key}: {data_json}')
-            await self.mqtt.publish(f'''{self.entity_prfx}{node_id}
-{key}''', data_json)
+            await self.mqtt.publish(f'{self.entity_prfx}{node_id}{key}', data_json)  # noqa: E501
             self.new_data[key] = False
 
     async def __register_home_assistant(self) -> None:
diff --git a/app/src/messages.py b/app/src/messages.py
index 8e69bf4..b80da16 100644
--- a/app/src/messages.py
+++ b/app/src/messages.py
@@ -1,7 +1,7 @@
 import struct
 import logging
 import time
-import datetime
+from datetime import datetime
 import weakref
 
 if __name__ == "app.src.messages":
@@ -131,16 +131,14 @@ class Message(metaclass=IterRegistry):
                 inv = inverters[serial_no]
                 self.node_id = inv['node_id']
                 self.sug_area = inv['suggested_area']
-                logger.debug(f'''SerialNo {serial_no} allowed!
-  area:{self.sug_area}''')
+                logger.debug(f'SerialNo {serial_no} allowed! area:{self.sug_area}')  # noqa: E501
             else:
                 self.node_id = ''
                 self.sug_area = ''
                 if 'allow_all' not in inverters or not inverters['allow_all']:
                     self.inc_counter('Unknown_SNR')
                     self.unique_id = None
-                    logger.warning(f'''ignore message from unknow inverter!
- (SerialNo: {serial_no})''')
+                    logger.warning(f'ignore message from unknow inverter! (SerialNo: {serial_no})')  # noqa: E501
                     return
                 logger.debug(f'SerialNo {serial_no} not known but accepted!')