From 29a11a3aa155e41d38d4e63111bcfe28117fd33e Mon Sep 17 00:00:00 2001
From: Min RK <benjaminrk@gmail.com>
Date: Tue, 26 May 2015 13:28:36 -0700
Subject: [PATCH] use `super` in NotebookApp.start

---
 notebook/notebookapp.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/notebook/notebookapp.py b/notebook/notebookapp.py
index bbbb66f09..c07bedb3c 100644
--- a/notebook/notebookapp.py
+++ b/notebook/notebookapp.py
@@ -1065,8 +1065,7 @@ class NotebookApp(JupyterApp):
         
         This method takes no arguments so all configuration and initialization
         must be done prior to calling this method."""
-        if self.subapp is not None:
-            return self.subapp.start()
+        super(NotebookApp, self).start()
 
         info = self.log.info
         for line in self.notebook_info().split("\n"):