From ffa60ba3f2c69c596ca0d2827b1782d8b922b00f Mon Sep 17 00:00:00 2001
From: Michel Oosterhof <micheloosterhof@users.noreply.github.com>
Date: Fri, 3 Jul 2020 10:35:42 +0800
Subject: [PATCH] Flake8 f523 (#1369)

* fix flake8 error F523