diff --git a/beat/web/dataformats/templatetags/dataformat_tags.py b/beat/web/dataformats/templatetags/dataformat_tags.py
index e040e15e1549655ecd2ff4d933a603520408989c..a938ded6d42366cc57cb19be43f3df66aaaaa0d5 100644
--- a/beat/web/dataformats/templatetags/dataformat_tags.py
+++ b/beat/web/dataformats/templatetags/dataformat_tags.py
@@ -27,18 +27,20 @@
 
 
 from django import template
-from django.conf import settings
-from ...common.texts import Messages as Texts
-from ...algorithms.models import Algorithm
-from ...databases.models import Database, DatabaseProtocol, DatabaseSet, DatabaseSetTemplate
 
+from ...algorithms.models import Algorithm
+from ...common.texts import Messages as Texts
+from ...databases.models import Database
+from ...databases.models import DatabaseProtocol
+from ...databases.models import DatabaseSet
+from ...databases.models import DatabaseSetTemplate
 
 register = template.Library()
 
 
-@register.inclusion_tag('dataformats/panels/table.html', takes_context=True)
+@register.inclusion_tag("dataformats/panels/table.html", takes_context=True)
 def dataformat_table(context, objects, owner, id):
-    '''Composes a dataformat list table
+    """Composes a dataformat list table
 
     This panel primarily exists for user's dataformat list page.
 
@@ -50,19 +52,14 @@ def dataformat_table(context, objects, owner, id):
         id: The HTML id to set on the generated table. This is handy for the
           filter functionality normally available on list pages.
 
-    '''
+    """
 
-    return dict(
-        request=context['request'],
-        objects=objects,
-        owner=owner,
-        panel_id=id,
-    )
+    return dict(request=context["request"], objects=objects, owner=owner, panel_id=id,)
 
 
-@register.inclusion_tag('dataformats/panels/actions.html', takes_context=True)
+@register.inclusion_tag("dataformats/panels/actions.html", takes_context=True)
 def dataformat_actions(context, object, display_count):
-    '''Composes the action buttons for a particular dataformat
+    """Composes the action buttons for a particular dataformat
 
     This panel primarily exists for showing action buttons for a given
     dataformat taking into consideration it is being displayed for a given user.
@@ -74,75 +71,101 @@ def dataformat_actions(context, object, display_count):
         display_count (bool): If the set of buttons should include one with the
           number of experiments using this dataformat.
 
-    '''
-    return dict(
-        request=context['request'],
-        object=object,
-        display_count=display_count,
-    )
+    """
+    return dict(request=context["request"], object=object, display_count=display_count,)
 
 
-@register.inclusion_tag('dataformats/panels/sharing.html', takes_context=True)
+@register.inclusion_tag("dataformats/panels/sharing.html", takes_context=True)
 def dataformat_sharing(context, object):
-    '''Composes the current sharing properties and a form to change them
+    """Composes the current sharing properties and a form to change them
 
     Parameters:
 
         object (DataFormat): The dataformat object concerned for which the
           buttons will be drawn.
 
-    '''
+    """
     return dict(
-        request=context['request'],
+        request=context["request"],
         object=object,
-        users=context['users'],
-        teams=context['teams'],
+        users=context["users"],
+        teams=context["teams"],
     )
 
 
-@register.inclusion_tag('dataformats/panels/editor.html', takes_context=True)
+@register.inclusion_tag("dataformats/panels/editor.html", takes_context=True)
 def dataformat_editor(context, obj):
     return {
-        'owner': context['request'].user == obj.author,
-            'object': obj,
-            'texts': Texts,
+        "owner": context["request"].user == obj.author,
+        "object": obj,
+        "texts": Texts,
     }
 
 
 @register.simple_tag(takes_context=True)
 def visible_referrer_dataformats(context, obj):
-    '''Calculates the visible usage for a given dataformat and requestor'''
+    """Calculates the visible usage for a given dataformat and requestor"""
 
-    return obj.referencing.for_user(context['request'].user, True).order_by('-creation_date').distinct()
+    return (
+        obj.referencing.for_user(context["request"].user, True)
+        .order_by("-creation_date")
+        .distinct()
+    )
 
 
 @register.simple_tag(takes_context=True)
 def visible_referrer_algorithms(context, obj):
-    '''Calculates the visible usage for a given dataformat and requestor'''
+    """Calculates the visible usage for a given dataformat and requestor"""
 
-    algorithms = Algorithm.objects.for_user(context['request'].user, True).filter(endpoints__in=obj.algorithm_endpoints.all()).order_by('-creation_date').distinct()
+    algorithms = (
+        Algorithm.objects.for_user(context["request"].user, True)
+        .filter(endpoints__in=obj.algorithm_endpoints.all())
+        .order_by("-creation_date")
+        .distinct()
+    )
 
     # analysis algorithms
-    potential_analyzers = Algorithm.objects.for_user(context['request'].user, True).exclude(result_dataformat=None).order_by('-creation_date').distinct()
+    potential_analyzers = (
+        Algorithm.objects.for_user(context["request"].user, True)
+        .exclude(result_dataformat=None)
+        .order_by("-creation_date")
+        .distinct()
+    )
     analyzers = set()
     for k in potential_analyzers:
-      if obj in k.all_referenced_result_dataformats(): analyzers.add(k)
+        if obj in k.all_referenced_result_dataformats():
+            analyzers.add(k)
 
-    return sorted(set(algorithms) | analyzers,
-                  key=lambda x: x.creation_date, reverse=True)
+    return sorted(
+        set(algorithms) | analyzers, key=lambda x: x.creation_date, reverse=True
+    )
 
 
 @register.simple_tag(takes_context=True)
 def visible_referrer_databases(context, obj):
-    '''Calculates the visible usage for a given dataformat and requestor'''
-
-    return Database.objects.filter(protocols__in=DatabaseProtocol.objects.filter(sets__in=DatabaseSet.objects.filter(template__in=DatabaseSetTemplate.objects.filter(outputs__in=obj.database_outputs.all())))).order_by('-creation_date').distinct()
+    """Calculates the visible usage for a given dataformat and requestor"""
+
+    return (
+        Database.objects.filter(
+            protocols__in=DatabaseProtocol.objects.filter(
+                sets__in=DatabaseSet.objects.filter(
+                    template__in=DatabaseSetTemplate.objects.filter(
+                        outputs__in=obj.database_outputs.all()
+                    )
+                )
+            )
+        )
+        .order_by("-creation_date")
+        .distinct()
+    )
 
 
 @register.simple_tag(takes_context=True)
 def visible_referrers_count(context, obj):
-    '''Calculates the visible usage for a given dataformat and requestor'''
+    """Calculates the visible usage for a given dataformat and requestor"""
 
-    return visible_referrer_dataformats(context, obj).count() + \
-        len(visible_referrer_algorithms(context, obj)) + \
-        visible_referrer_databases(context, obj).count()
+    return (
+        visible_referrer_dataformats(context, obj).count()
+        + len(visible_referrer_algorithms(context, obj))
+        + visible_referrer_databases(context, obj).count()
+    )