Make Message.__str__ more efficient.

diff --git a/Lib/rfc822.py b/Lib/rfc822.py
index 9a52a90d1dbfa38537dcc32734d51cf18ecf4c86..3811a59b208e824cc54aede33c412c1fb4d3fac8 100644 (file)
--- a/Lib/rfc822.py
+++ b/Lib/rfc822.py
@@ -460,10 +460,7 @@ class Message:
         return self.dict.items()
 
     def __str__(self):
-        str = ''
-        for hdr in self.headers:
-            str = str + hdr
-        return str
+        return ''.join(self.headers)
 
 
 # Utility functions