How to build stable 3.9 branch from fork and clone of cpython

[pjfarley3 at earthlink.net]

> -----Original Message-----
> From: Chris Angelico <rosuav at gmail.com>
> Sent: Tuesday, May 18, 2021 3:01 AM
> To: Python <python-list at python.org>
> Subject: Re: How to build stable 3.9 branch from fork and clone of cpython
> 
> On Tue, May 18, 2021 at 4:33 PM <pjfarley3 at earthlink.net> wrote:
> >
> > I am following the "Getting Started" section of the Python Developers
> > Guide, but when I build the first version to verify everything builds,
> > it builds branch 3.11.
> >
> > If I want to build and contribute to branch 3.9, how do I set that up
> > please?
> >
> 
> git checkout 3.9
> 
> That should switch you to the branch, replacing all the (tracked) files in the build
> directory with the corresponding files from 3.9.
> 
> Be aware that most development is going to happen on the master branch (or
> the main branch, whichever one you have), and branches like 3.9 are going to
> get backported patches; so any change you're planning to contribute to 3.9 is
> going to need to work correctly on both branches.
> 
> ChrisA

Thanks Chris, that did work.  Thinking over what you said though, perhaps I should change it back.

Would "git checkout main" reverse the branch 3.9 checkout?

As you can probably tell, I am very new to git, so please pardon my ignorance.

Peter