python-mode 'make-comint, 'start-file-process, 'default-directory. , , .
-, 'default-directory , :
(add-hook 'python-mode-hook (lambda () (setq default-directory "~"))
, C-x C-f - ( ~).
'default-directory 'py-shell, ():
(defadvice py-shell (around py-shell-different-directory activate)
"set default-directory just for py-shell"
(let ((default-directory "~"))
ad-do-it))