--- a/libervia/pages/g/page_meta.py	Tue Aug 13 09:39:33 2019 +0200
+++ b/libervia/pages/g/page_meta.py	Tue Aug 13 19:12:31 2019 +0200
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2.7
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
 from libervia.server.constants import Const as C
@@ -10,7 +10,7 @@
 log = getLogger(__name__)
 
 access = C.PAGES_ACCESS_PUBLIC
-template = u"invitation/welcome.html"
+template = "invitation/welcome.html"
 
 
 @defer.inlineCallbacks
@@ -32,7 +32,7 @@
     if current_id is not None and current_id != invitation_id:
         log.info(
             _(
-                u"killing guest session [{old_id}] because it is connecting with an other ID [{new_id}]"
+                "killing guest session [{old_id}] because it is connecting with an other ID [{new_id}]"
             ).format(old_id=current_id, new_id=invitation_id)
         )
         self.host.purgeSession(request)
@@ -46,7 +46,7 @@
     if profile is not None and current_id is None:
         log.info(
             _(
-                u"killing current profile session [{profile}] because a guest id is used"
+                "killing current profile session [{profile}] because a guest id is used"
             ).format(profile=profile)
         )
         self.host.purgeSession(request)
@@ -56,7 +56,7 @@
         profile = None
 
     if current_id is None:
-        log.debug(_(u"checking invitation [{id}]").format(id=invitation_id))
+        log.debug(_("checking invitation [{id}]").format(id=invitation_id))
         try:
             data = yield self.host.bridgeCall("invitationGet", invitation_id)
         except Exception:
@@ -68,21 +68,21 @@
         data = guest_session.data
 
     if profile is None:
-        log.debug(_(u"connecting profile [{}]").format(profile))
+        log.debug(_("connecting profile [{}]").format(profile))
         # we need to connect the profile
         profile = data["guest_profile"]
         password = data["password"]
         try:
             yield self.host.connect(request, profile, password)
         except Exception as e:
-            log.warning(_(u"Can't connect profile: {msg}").format(msg=e))
+            log.warning(_("Can't connect profile: {msg}").format(msg=e))
             # FIXME: no good error code correspond
             #        maybe use a custom one?
             self.pageError(request, code=C.HTTP_SERVICE_UNAVAILABLE)
 
         log.info(
             _(
-                u"guest session started, connected with profile [{profile}]".format(
+                "guest session started, connected with profile [{profile}]".format(
                     profile=profile
                 )
             )
@@ -91,16 +91,16 @@
     # we copy data useful in templates
     template_data = request.template_data
     template_data["norobots"] = True
-    if u"name" in data:
-        template_data[u"name"] = data[u"name"]
-    if u"language" in data:
-        template_data[u"locale"] = data[u"language"]
+    if "name" in data:
+        template_data["name"] = data["name"]
+    if "language" in data:
+        template_data["locale"] = data["language"]
 
 def handleEventInterest(self, interest):
     if C.bool(interest.get("creator", C.BOOL_FALSE)):
-        page_name = u"event_admin"
+        page_name = "event_admin"
     else:
-        page_name = u"event_rsvp"
+        page_name = "event_rsvp"
 
     interest["url"] = self.getPageByName(page_name).getURL(
         interest.get("service", ""),
@@ -108,24 +108,24 @@
         interest.get("item"),
         )
 
-    if u"thumb_url" not in interest and u"image" in interest:
-        interest[u"thumb_url"] = interest[u"image"]
+    if "thumb_url" not in interest and "image" in interest:
+        interest["thumb_url"] = interest["image"]
 
 def handleFISInterest(self, interest):
-    path = interest.get(u'path', u'')
-    path_args = [p for p in path.split(u'/') if p]
-    subtype = interest.get(u'subtype')
+    path = interest.get('path', '')
+    path_args = [p for p in path.split('/') if p]
+    subtype = interest.get('subtype')
 
-    if subtype == u'files':
-        page_name = u"files_view"
-    elif interest.get(u'subtype') == u'photos':
-        page_name = u"photos_album"
+    if subtype == 'files':
+        page_name = "files_view"
+    elif interest.get('subtype') == 'photos':
+        page_name = "photos_album"
     else:
-        log.warning(u"unknown interest subtype: {subtype}".format(subtype=subtype))
+        log.warning("unknown interest subtype: {subtype}".format(subtype=subtype))
         return False
 
     interest["url"] = self.getPageByName(page_name).getURL(
-        interest[u'service'], *path_args)
+        interest['service'], *path_args)
 
 @defer.inlineCallbacks
 def prepare_render(self, request):
@@ -137,17 +137,17 @@
         interests = yield self.host.bridgeCall(
             "interestsList", "", "", "", profile)
     except Exception:
-        log.warning(_(u"Can't get interests list for {profile}").format(
+        log.warning(_("Can't get interests list for {profile}").format(
             profile=profile))
     else:
         # we only want known interests (photos and events for now)
         # this dict map namespaces of interest to a callback which can manipulate
         # the data. If it returns False, the interest is skipped
         ns_data = {}
-        template_data[u'interests_map'] = interests_map = {}
+        template_data['interests_map'] = interests_map = {}
 
-        for short_name, cb in ((u'event', handleEventInterest),
-                               (u'fis', handleFISInterest),
+        for short_name, cb in (('event', handleEventInterest),
+                               ('fis', handleFISInterest),
                               ):
             try:
                 namespace = self.host.ns_map[short_name]
@@ -157,13 +157,13 @@
                 ns_data[namespace] = (cb, short_name)
 
         for interest in interests:
-            namespace = interest.get(u'namespace')
+            namespace = interest.get('namespace')
             if namespace not in ns_data:
                 continue
             cb, short_name = ns_data[namespace]
             if cb(self, interest) == False:
                 continue
-            key = interest.get(u'subtype', short_name)
+            key = interest.get('subtype', short_name)
             interests_map.setdefault(key, []).append(interest)
 
     # main URI
@@ -172,4 +172,4 @@
     if main_uri:
         include_url = self.getPagePathFromURI(main_uri)
         if include_url is not None:
-            template_data[u"include_url"] = include_url
+            template_data["include_url"] = include_url