python doc available in emacs info format?

[Xah Lee]

info format for Xah Lee writes:
> in programing elisp in emacs, i can press “Ctrl+h f” to lookup
> the doc for the function under cursor.   is there such facility
> when coding in perl, python, php?


 On Dec 11 2008, 6:56 am, Matthias <oron... at gmail.com> wrote:
> Yes, try C-h S (or similarly <f1> S):

>      (info-lookup-symbol SYMBOL &optional MODE)  Display the
> definition of SYMBOL, as found in the relevant manual. When this
> command is called interactively, it reads SYMBOL from the
> minibuffer.

> Note that `the relevant manual' means an info file. With recent
> emacsen on an Ubuntu distro, python arrives with info files and
> everything is well configured. It also works with bash, latex, perl,
> scheme, elisp, awk, texinfo, makefile, libc, or any info file with an
> index.

I noticed that Matthias actually mentioned that info docs is available
and bundled out of the box on Ubuntu linux for many popular langs, as
of 2008-12.

Is that true? Where can i download these info files? As far as i know,
a little google search or official doc sites usually don't have a
download for info format.

I'm interested in getting current version doc for perl, python, php,
and ruby.

Thanks.

  Xah
∑ http://xahlee.org/

☄