Ticket #19827: #19827-stacktrace_on_reraise.diff

django/template/defaulttags.py

@@ -409 +408 @@
         url = ''
         try:
             url = reverse(view_name, args=args, kwargs=kwargs, current_app=context.current_app)
-        except NoReverseMatch, e:
+        except NoReverseMatch:
             if settings.SETTINGS_MODULE:
+                exc_info = sys.exc_info()
                 project_name = settings.SETTINGS_MODULE.split('.')[0]
                 try:
                     url = reverse(project_name + '.' + view_name,
@@ -421 +421 @@
                         # Re-raise the original exception, not the one with
                         # the path relative to the project. This makes a
                         # better error message.
-                        raise e
+                        raise exc_info[0], exc_info[1], exc_info[2]
             else:
                 if self.asvar is None:
-                    raise e
+                    raise
 
         if self.asvar:
             context[self.asvar] = url