From 9d1082bd302832fe7289dfbed53a81a17eccf05c Mon Sep 17 00:00:00 2001
From: Mark Dickinson <mdickinson@enthought.com>
Date: Thu, 21 Nov 2019 13:13:36 +0000
Subject: [PATCH] Add changelog file.

---
 changelog/6255.bugfix.rst | 3 +++
 1 file changed, 3 insertions(+)
 create mode 100644 changelog/6255.bugfix.rst

diff --git a/changelog/6255.bugfix.rst b/changelog/6255.bugfix.rst
new file mode 100644
index 000000000..831187feb
--- /dev/null
+++ b/changelog/6255.bugfix.rst
@@ -0,0 +1,3 @@
+Clear the ``sys.last_traceback``, ``sys.last_type`` and ``sys.last_value``
+attributes by deleting them instead of setting them to ``None``. This better
+matches the behaviour of the Python standard library.