--- a/sat/plugins/plugin_xep_0049.py	Wed Jun 27 07:51:29 2018 +0200
+++ b/sat/plugins/plugin_xep_0049.py	Wed Jun 27 20:14:46 2018 +0200
@@ -20,12 +20,12 @@
 from sat.core.i18n import _
 from sat.core.constants import Const as C
 from sat.core.log import getLogger
+
 log = getLogger(__name__)
 from wokkel import compat
 from twisted.words.xish import domish
 
 
-
 PLUGIN_INFO = {
     C.PI_NAME: "XEP-0049 Plugin",
     C.PI_IMPORT_NAME: "XEP-0049",
@@ -34,12 +34,12 @@
     C.PI_DEPENDENCIES: [],
     C.PI_MAIN: "XEP_0049",
     C.PI_HANDLER: "no",
-    C.PI_DESCRIPTION: _("""Implementation of private XML storage""")
+    C.PI_DESCRIPTION: _("""Implementation of private XML storage"""),
 }
 
 
 class XEP_0049(object):
-    NS_PRIVATE = 'jabber:iq:private'
+    NS_PRIVATE = "jabber:iq:private"
 
     def __init__(self, host):
         log.info(_("Plugin XEP-0049 initialization"))
@@ -55,7 +55,7 @@
         client = self.host.getClient(profile_key)
         # XXX: feature announcement in disco#info is not mandatory in XEP-0049, so we have to try to use private XML, and react according to the answer
         iq_elt = compat.IQ(client.xmlstream)
-        query_elt = iq_elt.addElement('query', XEP_0049.NS_PRIVATE)
+        query_elt = iq_elt.addElement("query", XEP_0049.NS_PRIVATE)
         query_elt.addChild(element)
         return iq_elt.send()
 
@@ -69,13 +69,14 @@
         """
         client = self.host.getClient(profile_key)
         # XXX: see privateXMLStore note about feature checking
-        iq_elt = compat.IQ(client.xmlstream, 'get')
-        query_elt = iq_elt.addElement('query', XEP_0049.NS_PRIVATE)
+        iq_elt = compat.IQ(client.xmlstream, "get")
+        query_elt = iq_elt.addElement("query", XEP_0049.NS_PRIVATE)
         query_elt.addElement(node_name, namespace)
+
         def getCb(answer_iq_elt):
-            answer_query_elt = answer_iq_elt.elements(XEP_0049.NS_PRIVATE, 'query').next()
+            answer_query_elt = answer_iq_elt.elements(XEP_0049.NS_PRIVATE, "query").next()
             return answer_query_elt.firstChildElement()
+
         d = iq_elt.send()
         d.addCallback(getCb)
         return d
-