From 2e85d23d2e4af152e8011e7cf325222cdffd8e64 Mon Sep 17 00:00:00 2001 From: Steven Silvester Date: Thu, 31 Mar 2022 08:34:13 -0500 Subject: [PATCH] Do not try to send if closed --- ipykernel/iostream.py | 3 +++ 1 file changed, 3 insertions(+) diff --git a/ipykernel/iostream.py b/ipykernel/iostream.py index 782ac5ad9..1cc4c8f16 100644 --- a/ipykernel/iostream.py +++ b/ipykernel/iostream.py @@ -226,6 +226,9 @@ def send_multipart(self, *args, **kwargs): def _really_send(self, msg, *args, **kwargs): """The callback that actually sends messages""" + if self.closed: + return + mp_mode = self._check_mp_mode() if mp_mode != CHILD: