--- a/.emacs-my	Wed Dec 21 22:36:27 2011 +0200
+++ b/.emacs-my	Tue Jan 03 18:46:17 2012 +0200
@@ -1947,6 +1947,12 @@
 
 (setq python-indent 4)
 
+(eval-after-load 'python-mode
+  (when (equal py-version "5.1.0")
+    (setq-default py-which-shell py-python-command)
+    ;; (py-toggle-shells 'cpython)
+    ))
+
 (defun my-python-add-to-path (path)
   (interactive (list (read-directory-name "Enter new path for PYTHONPATH: ")))
   (when (featurep 'cygwin-mount)