Please feel free to reply to
python-dev@python.org rather than me personally to take this back to
the list.

On Tue, Apr 17, 2018 at 1:20 PM, Martin Gainty <mgainty@hotmail.com> wrote:
> I'll need a few specifics before i wandering into "dll hell"
>
> .NetFramework version?
> RT Library version? ....in the old days we used to call this msvcrt.dll
>
> msvc or mingw compiler?
> if msvc which version msvc?
> if mingw which version msvc ?

Have a look at https://devguide.python.org/ to get started


contributing to CPython, and in particular
https://devguide.python.org/setup/#windows for getting set up on
Windows.

To answer your questions in brief, though: we use the latest MSVC
compiler available with Visual Studio 2017, which links to the
"universal CRT" and avoids most of the old headaches of
incompatibilities between the runtimes used by different compiler
versions.

You may also be interested in the core-mentorship mailing list,
details about which can be found at
https://mail.python.org/mm3/mailman3/lists/core-mentorship.python.org/

Regards,
--
Zach