From 83e82320da2590522134325d55c1f5122abbf6f3 Mon Sep 17 00:00:00 2001
From: kgriffs <kurt.griffiths@rackspace.com>
Date: Mon, 7 Oct 2013 12:47:21 -0500
Subject: [PATCH] perf(Request): Use a list comprehension and don't lowercase
 the headers

List comprehensions are faster than generators. Also, there is no
need to lowercase the header name, since headers are case-insensitive
after all.
---
 falcon/request.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/falcon/request.py b/falcon/request.py
index b6d2fa7..1d73498 100644
--- a/falcon/request.py
+++ b/falcon/request.py
@@ -421,8 +421,8 @@ class Request(object):
             A dictionary of HTTP headers.
 
         """
-        return dict((k.lower().replace('_', '-'), v)
-                    for k, v in self._headers.items())
+        return dict([(k.replace('_', '-'), v)
+                    for k, v in self._headers.items()])
 
     def get_header(self, name, required=False):
         """Return a header value as a string