--- a/libervia/backend/plugins/plugin_xep_0376.py	Tue Jun 18 12:06:45 2024 +0200
+++ b/libervia/backend/plugins/plugin_xep_0376.py	Wed Jun 19 18:44:57 2024 +0200
@@ -73,7 +73,7 @@
         nodeIdentifier: str,
         sub_jid: Optional[jid.JID],
         options: Optional[dict],
-        subscribe: bool
+        subscribe: bool,
     ) -> None:
         if sub_jid is None:
             sub_jid = client.jid.userhostJID()
@@ -90,8 +90,7 @@
             options_elt["node"] = nodeIdentifier
             options_elt["jid"] = sub_jid.full()
             form = data_form.Form(
-                formType='submit',
-                formNamespace=pubsub.NS_PUBSUB_SUBSCRIBE_OPTIONS
+                formType="submit", formNamespace=pubsub.NS_PUBSUB_SUBSCRIBE_OPTIONS
             )
             form.makeFields(options)
             options_elt.addChild(form.toElement())
@@ -104,7 +103,7 @@
         service: jid.JID,
         nodeIdentifier: str,
         sub_jid: Optional[jid.JID] = None,
-        options: Optional[dict] = None
+        options: Optional[dict] = None,
     ) -> Tuple[bool, Optional[pubsub.Subscription]]:
         if not self.host.hasFeature(client, NS_PAM) or client.is_component:
             return True, None
@@ -161,7 +160,7 @@
                     ("service", "service"),
                     ("node", "node"),
                     ("jid", "subscriber"),
-                    ("subscription", "state")
+                    ("subscription", "state"),
                 ):
                     sub[key] = subscription_elt[attr]
             except KeyError as e: