From: Serge S. Koval <serge.koval+github@gmail.com>
Date: Sat, 13 Apr 2013 21:02:49 +0000 (+0300)
Subject: Don't use range for performance reasons
X-Git-Tag: v3.1.0~121^2~1
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=78d9cc6519f2894783b3409ca67360173e8a26fa;p=thirdparty%2Ftornado.git

Don't use range for performance reasons
---

diff --git a/tornado/stack_context.py b/tornado/stack_context.py
index 64c815f0e..8804d42d8 100644
--- a/tornado/stack_context.py
+++ b/tornado/stack_context.py
@@ -259,8 +259,9 @@ def wrap(fn):
                 exc = _handle_exception(top, exc)
             else:
                 # Otherwise take shorter path and run stack contexts in reverse order
-                for n in range(last_ctx - 1, -1, -1):
-                    c = stack[n]
+                while last_ctx > 0:
+                    last_ctx -= 1
+                    c = stack[last_ctx]
 
                     try:
                         c.exit(*exc)