From 1a831f94ed4ffb36d8ca031760ddb2fe601f1e1a Mon Sep 17 00:00:00 2001
From: Maddy <12754347+MaddyDev@users.noreply.github.com>
Date: Thu, 12 Mar 2020 18:01:44 -0700
Subject: [PATCH] check for len > 1 (#9586)

---
 .../notebook/resources/notebooks/JupyterBooksCreate.ipynb       | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/extensions/notebook/resources/notebooks/JupyterBooksCreate.ipynb b/extensions/notebook/resources/notebooks/JupyterBooksCreate.ipynb
index ad56e713eb..425aca5c43 100644
--- a/extensions/notebook/resources/notebooks/JupyterBooksCreate.ipynb
+++ b/extensions/notebook/resources/notebooks/JupyterBooksCreate.ipynb
@@ -41,7 +41,7 @@
                 "#install jupyter-book\r\n",
                 "cmd = f'{sys.executable} -m pip show jupyter-book'\r\n",
                 "cmdOutput = !{cmd}\r\n",
-                "if len(cmdOutput) > 0 and '0.6.4' in cmdOutput[1]:\r\n",
+                "if len(cmdOutput) > 1 and '0.6.4' in cmdOutput[1]:\r\n",
                 "    print('Jupyter-book required version is already installed!')\r\n",
                 "else:\r\n",
                 "    !pip install jupyter-book"