From 17ba245eebb820d0862e00f6ec506425ffd8d150 Mon Sep 17 00:00:00 2001
From: Sylvain Corlay <sylvain.corlay@gmail.com>
Date: Sat, 17 Apr 2021 01:36:35 +0200
Subject: [PATCH] Do no flush control stream in shell thread.

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

diff --git a/ipykernel/kernelbase.py b/ipykernel/kernelbase.py
index 91a26df18..2bcf22a87 100644
--- a/ipykernel/kernelbase.py
+++ b/ipykernel/kernelbase.py
@@ -411,10 +411,6 @@ def dispatch_queue(self):
         """
 
         while True:
-            # ensure control stream is flushed before processing shell messages
-            if self.control_stream:
-                self.control_stream.flush()
-            # receive the next message and handle it
             try:
                 yield self.process_one()
             except Exception: