From 80865ce4b2dee27d0be3868219fc447940ab1858 Mon Sep 17 00:00:00 2001
From: Bert JW Regeer <bertjw@regeer.org>
Date: Fri, 9 Dec 2016 22:16:49 -0700
Subject: Use has_body so we don't unravel app_iter

This allows streaming responses.

Closes #2625
---
 pyramid/httpexceptions.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pyramid/httpexceptions.py b/pyramid/httpexceptions.py
index 054917dfa..a22b088c6 100644
--- a/pyramid/httpexceptions.py
+++ b/pyramid/httpexceptions.py
@@ -246,7 +246,7 @@ ${body}''')
                 'title': self.title}
 
     def prepare(self, environ):
-        if not self.body and not self.empty_body:
+        if not self.has_body and not self.empty_body:
             html_comment = ''
             comment = self.comment or ''
             accept_value = environ.get('HTTP_ACCEPT', '')
-- 
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