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
Python docs are now generated using Sphynx framework. This framework does not have texinfo output format. Currently it has:
Maybe you can get what you want using the Latex output. With the text output you will lost the cross ref.
Personnaly I prefer using pydoc when I want textual output. With Vim I have a shorcut to call pydoc and open a window with the doc for the entity under my cursor...