From 5431a027629cb954f272f4b9ae98962bfa83ef29 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?L=2E=20K=C3=A4rkk=C3=A4inen?=
 <tronic@users.noreply.github.com>
Date: Sat, 14 Mar 2020 14:27:17 +0200
Subject: [PATCH] Suppress internal traceback when interrupting program and
 provide useful diagnostic message.

---
 ipykernel/kernelbase.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/ipykernel/kernelbase.py b/ipykernel/kernelbase.py
index 9685d5470..263ca56fe 100644
--- a/ipykernel/kernelbase.py
+++ b/ipykernel/kernelbase.py
@@ -575,7 +575,7 @@ def complete_request(self, stream, ident, parent):
         content = parent['content']
         code = content['code']
         cursor_pos = content['cursor_pos']
-        
+
         matches = yield gen.maybe_future(self.do_complete(code, cursor_pos))
         matches = json_clean(matches)
         completion_msg = self.session.send(stream, 'complete_reply',
@@ -886,7 +886,7 @@ def _input_request(self, prompt, ident, parent, password=False):
                 self.log.warning("Invalid Message:", exc_info=True)
             except KeyboardInterrupt:
                 # re-raise KeyboardInterrupt, to truncate traceback
-                raise KeyboardInterrupt
+                raise KeyboardInterrupt("Interrupted by user") from None
             else:
                 break
         try: