=== modified file 'python-mode.el'
--- python-mode.el	2012-02-20 07:26:46 +0000
+++ python-mode.el	2012-02-21 19:07:16 +0000
@@ -6679,7 +6679,7 @@
 Optional arguments DEDICATED (boolean) and SWITCH (symbols 'noswitch/'switch)
 "
   (interactive "r\nP")
-  (let ((shell (cond ((eq 4 (prefix-numeric-value shell)) (default-value py-shell-name))
+  (let ((shell (cond ((eq 4 (prefix-numeric-value shell)) (default-value 'py-shell-name))
                      ((and (numberp shell) (not (eq 1 (prefix-numeric-value shell))))
                       (read-from-minibuffer "(path-to-)shell-name: " (default-value 'py-shell-name)))
                      (t shell))))
@@ -6699,7 +6699,7 @@
 
 When called from a programm, it accepts a string specifying a shell which will be forced upon execute as argument. "
   (interactive "r\nP")
-  (let ((shell (cond ((eq 4 (prefix-numeric-value shell)) (default-value py-shell-name))
+  (let ((shell (cond ((eq 4 (prefix-numeric-value shell)) (default-value 'py-shell-name))
                      ((and (numberp shell) (not (eq 1 (prefix-numeric-value shell))))
                       (read-from-minibuffer "(path-to-)shell-name: " (default-value 'py-shell-name)))
                      (t shell))))