Since Python 2.6, it seems the documentation is in the new reStructuredText format, and it doesn\'t seem very easy to build a Texinfo Info file out of the box anymore.
I
Another "workaround" is to execute pydoc
as suggested by Nikokrock directly in Emacs:
(defun pydoc (&optional arg)
(interactive)
(when (not (stringp arg))
(setq arg (thing-at-point 'word)))
(setq cmd (concat "pydoc " arg))
(ad-activate-regexp "auto-compile-yes-or-no-p-always-yes")
(shell-command cmd)
(setq pydoc-buf (get-buffer "*Shell Command Output*"))
(switch-to-buffer-other-window pydoc-buf)
(python-mode)
(ad-deactivate-regexp "auto-compile-yes-or-no-p-always-yes")
)