Cosmetic changes

dav_base/config/modules.py

@@ -36,20 +36,22 @@ class ModuleMeta:
         return self._additional_apps
 
     @property
-    def url_conf_pattern(self):
-        url_pattern = '^'
+    def url_prefix(self):
         if self._url_prefix is None:
-            url_pattern += self._package_name
+            return self._package_name
         else:
-            url_pattern += self._url_prefix
-        url_pattern += '/'
-        url_conf = self._package_name + '.urls'
-        return django_conf_url(url_pattern, include(url_conf, self.url_namespace))
+            return self._url_prefix
 
     @property
     def url_namespace(self):
         return self._package_name.replace('.', '_')
 
+    @property
+    def url_conf_pattern(self):
+        url_pattern = '^{}/'.format(self.url_prefix)
+        url_conf = self._package_name + '.urls'
+        return django_conf_url(url_pattern, include(url_conf, self.url_namespace))
+
     def _load_from_package(self):
         package_name = self._package_name
         json_text = pkg_resources.resource_string(package_name, self._json_file)