diff -r 540a9c69c2ea Lib/subprocess.py
--- a/Lib/subprocess.py	Fri Sep 13 19:53:08 2013 +0200
+++ b/Lib/subprocess.py	Sun Sep 15 02:44:02 2013 +0300
@@ -883,11 +883,11 @@
         # Wait for the process to terminate, to avoid zombies.
         self.wait()
 
-    def __del__(self, _maxsize=sys.maxsize, _active=_active):
+    def __del__(self, _maxsize=sys.maxsize, _active=_active, _getattr=getattr):
         # If __init__ hasn't had a chance to execute (e.g. if it
         # was passed an undeclared keyword argument), we don't
         # have a _child_created attribute at all.
-        if not getattr(self, '_child_created', False):
+        if not _getattr(self, '_child_created', False):
             # We didn't get to successfully create a child process.
             return
         # In case the child hasn't been waited on, check if it's done.