Thank you for your reply.

I have added my reply/remark bellow.

Eli Zaretskii <eliz@gnu.org> writes:
> FWIW, the Python manual in Info format can be found on the Internet
> and downloaded.  You don't need to produce it by yourself.

An official version ?

> You will need to make sure each version's manual has a distinct name.
> For example, the manual for Python v3.9 could be called
> python-3.9.info, while the manual for Python v3.13 could be called
> python-3.13.info.

Including the version in the info name is a good idea. But I will need
to write a function to switch the version of Python documentation used
with `C-h S`.