From 536a6d64dc2a80347d5917ce955ff8cd9eab59be Mon Sep 17 00:00:00 2001
From: Michael Marchetti <mmarchetti@continuum.io>
Date: Thu, 3 Dec 2015 12:49:12 -0500
Subject: [PATCH] Use `dict()` to convert the mapping to a dictionary

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

diff --git a/notebook/log.py b/notebook/log.py
index 9e727f0b7..dab330cb4 100644
--- a/notebook/log.py
+++ b/notebook/log.py
@@ -43,7 +43,6 @@ def log_request(handler):
         msg = msg + ' referer={referer}'
     if status >= 500 and status != 502:
         # log all headers if it caused an error
-        headers = { k: request.headers[k] for k in request.headers }
-        log_method(json.dumps(headers, indent=2))
+        log_method(json.dumps(dict(request.headers), indent=2))
     log_method(msg.format(**ns))