Improve performance of HeaderDict.headeritems()

1 files changed, 4 insertions, 4 deletions

diff --git a/paste/response.py b/paste/response.py
index 7d3c72d..c35639c 100644
--- a/paste/response.py
+++ b/paste/response.py
@@ -68,12 +68,12 @@ class HeaderDict(dict):
 
     def headeritems(self):
         result = []
-        for key in self:
-            if isinstance(self[key], list):
-                for v in self[key]:
+        for key, value in self.items():
+            if isinstance(value, list):
+                for v in value:
                     result.append((key, str(v)))
             else:
-                result.append((key, str(self[key])))
+                result.append((key, str(value)))
         return result
 
     #@classmethod