* lisp/progmodes/python.el (python-shell--prompt-calculated-output-regexp):
python-shell-set-prompt-regexp doesn't exist, presumably
python-shell-prompt-set-calculated-regexps was meant.
(defvar python-shell--prompt-calculated-output-regexp nil
"Calculated output prompt regexp for inferior python shell.
Do not set this variable directly, instead use
-`python-shell-set-prompt-regexp'.")
+`python-shell-prompt-set-calculated-regexps'.")
(defun python-shell-prompt-detect ()
"Detect prompts for the current `python-shell-interpreter'.