diff -r dc18a2a66d16 Lib/idlelib/run.py
--- a/Lib/idlelib/run.py	Tue Jul 10 10:05:00 2012 -0400
+++ b/Lib/idlelib/run.py	Tue Jul 10 09:35:23 2012 -0500
@@ -276,6 +276,12 @@
             raise TypeError('must be str, not ' + type(s).__name__)
         return self.rpc.write(s)
 
+    def readline(self):
+        return self.rpc.readline()
+
+    def isatty(self):
+        return self.rpc.isatty()
+
 class MyHandler(rpc.RPCHandler):
 
     def handle(self):