diff -r 7757d0840a78 -r 05db92f1e97d .emacs-my
--- a/.emacs-my	Tue Jan 03 18:46:17 2012 +0200
+++ b/.emacs-my	Wed Jan 04 00:33:56 2012 +0200
@@ -1948,7 +1948,7 @@
 (setq python-indent 4)
 
 (eval-after-load 'python-mode
-  (when (equal py-version "5.1.0")
+  (when (and (boundp 'py-version) (equal py-version "5.1.0"))
     (setq-default py-which-shell py-python-command)
     ;; (py-toggle-shells 'cpython)
     ))