[database][api] Fix key search in dictionaries

beat/web/databases/api.py

@@ -145,7 +145,7 @@ class ListTemplatesView(views.APIView):
         for set_template in DatabaseSetTemplate.objects.filter(sets__protocol__database__in=databases).distinct().order_by('name'):
             (db_template, dataset) = set_template.name.split('__')
 
-            if not(result.has_key(db_template)):
+            if db_template not in result:
                 result[db_template] = {
                     'templates': {},
                     'sets': [],
@@ -208,7 +208,7 @@ class RetrieveDatabaseView(views.APIView):
 
 
         # Process the query string
-        if request.GET.has_key('fields'):
+        if 'fields' in request.GET:
             fields_to_return = request.GET['fields'].split(',')
         else:
             fields_to_return = [ 'name', 'version', 'last_version',