From 03b7feb50736d6fe27f2639afd2747ec2187290c Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Wed, 16 Jun 2021 19:47:54 +0530
Subject: [PATCH] Avoid ipython repeated exception when not available

---
 src/calibre/utils/ipython.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/calibre/utils/ipython.py b/src/calibre/utils/ipython.py
index 59417d2d91..cd95ace936 100644
--- a/src/calibre/utils/ipython.py
+++ b/src/calibre/utils/ipython.py
@@ -187,11 +187,14 @@ def simple_repl(user_ns={}):
 
 def ipython(user_ns=None):
     os.environ['IPYTHONDIR'] = ipydir
+    have_ipython = True
     try:
         from IPython.terminal.embed import InteractiveShellEmbed
         from traitlets.config.loader import Config
         from IPython.terminal.prompts import Prompts, Token
     except ImportError:
+        have_ipython = False
+    if not have_ipython:
         return simple_repl(user_ns=user_ns)
 
     class CustomPrompt(Prompts):