From ac41094472dabc62db303eb0e74d51fb8dc80ef1 Mon Sep 17 00:00:00 2001
From: Aeeeeeep <aep_sun@qq.com>
Date: Mon, 5 Dec 2022 15:35:59 +0800
Subject: [PATCH] fix press Ctrl+D with none label, the labelImg.py break down

---
 labelImg.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/labelImg.py b/labelImg.py
index efd8a2976..8e031fb95 100755
--- a/labelImg.py
+++ b/labelImg.py
@@ -813,6 +813,9 @@ def shape_selection_changed(self, selected=False):
         self.actions.shapeFillColor.setEnabled(selected)
 
     def add_label(self, shape):
+        if shape is None:
+            # print('add empty label')
+            return
         shape.paint_label = self.display_label_option.isChecked()
         item = HashableQListWidgetItem(shape.label)
         item.setFlags(item.flags() | Qt.ItemIsUserCheckable)