--- a/libervia/frontends/quick_frontend/quick_widgets.py	Tue Jun 18 12:06:45 2024 +0200
+++ b/libervia/frontends/quick_frontend/quick_widgets.py	Wed Jun 19 18:44:57 2024 +0200
@@ -55,7 +55,8 @@
 
 class QuickWidgetsManager(object):
     """This class is used to manage all the widgets of a frontend
-    A widget can be a window, a graphical thing, or someting else depending of the frontend"""
+    A widget can be a window, a graphical thing, or someting else depending of the frontend
+    """
 
     def __init__(self, host):
         self.host = host
@@ -257,20 +258,26 @@
                     recreate_args(_args, _kwargs)
                 widget = cls(*_args, **_kwargs)
                 widgets_map[hash_].append(widget)
-                log.debug("widget <{wid}> already exists, a new one has been recreated"
-                    .format(wid=widget))
+                log.debug(
+                    "widget <{wid}> already exists, a new one has been recreated".format(
+                        wid=widget
+                    )
+                )
             elif callable(on_existing_widget):
                 widget = on_existing_widget(widget)
                 if widget is None:
                     raise exceptions.InternalError(
-                        "on_existing_widget method must return the widget to use")
+                        "on_existing_widget method must return the widget to use"
+                    )
                 if widget not in widgets_map[hash_]:
                     log.debug(
-                        "the widget returned by on_existing_widget is new, adding it")
+                        "the widget returned by on_existing_widget is new, adding it"
+                    )
                     widgets_map[hash_].append(widget)
             else:
                 raise exceptions.InternalError(
-                    "Unexpected on_existing_widget value ({})".format(on_existing_widget))
+                    "Unexpected on_existing_widget value ({})".format(on_existing_widget)
+                )
 
         return widget
 
@@ -296,13 +303,14 @@
         """
         # TODO: all_instances must be independante kwargs, this is not possible with Python 2
         #       but will be with Python 3
-        all_instances = kwargs.get('all_instances', False)
+        all_instances = kwargs.get("all_instances", False)
 
         if all_instances:
             for w in self.get_widget_instances(widget_to_delete):
                 if w.on_delete(**kwargs) == False:
                     log.debug(
-                        f"Deletion of {widget_to_delete} cancelled by widget itself")
+                        f"Deletion of {widget_to_delete} cancelled by widget itself"
+                    )
                     return
         else:
             if widget_to_delete.on_delete(**kwargs) == False:
@@ -318,8 +326,9 @@
         except KeyError:
             log.error("no widgets_map found for class {cls}".format(cls=class_))
             return
-        widget_hash = str(class_.get_widget_hash(widget_to_delete.target,
-                                                   widget_to_delete.profiles))
+        widget_hash = str(
+            class_.get_widget_hash(widget_to_delete.target, widget_to_delete.profiles)
+        )
         try:
             widget_instances = widgets_map[widget_hash]
         except KeyError:
@@ -340,13 +349,17 @@
             # all instances with this hash have been deleted
             # we remove the hash itself
             del widgets_map[widget_hash]
-            log.debug("All instances of {cls} with hash {widget_hash!r} have been deleted"
-                .format(cls=class_, widget_hash=widget_hash))
+            log.debug(
+                "All instances of {cls} with hash {widget_hash!r} have been deleted".format(
+                    cls=class_, widget_hash=widget_hash
+                )
+            )
             self.host.call_listeners("widgetDeleted", widget_to_delete)
 
 
 class QuickWidget(object):
     """generic widget base"""
+
     # FIXME: sometime a single target is used, sometimes several ones
     #        This should be sorted out in the same way as for profiles: a single
     #        target should be possible when appropriate attribute is set.