[Python-Dev] New Windows installer for Python 3.5

Eric Fahlgren ericfahlgren at gmail.com
Sun Jan 4 15:23:42 CET 2015

I believe that the new default location addresses your first question: the
64-bit will install in c:/Program Files/Pythonxx and the 32-bit in
c:/Program Files (x86)/Pythonxx (at least this has been my standard
practice for several years).

On Jan 4, 2015 7:03 AM, "Paul Moore" <p.f.moore at gmail.com> wrote:

> On 3 January 2015 at 23:34, Steve Dower <Steve.Dower at microsoft.com> wrote:
> > I've put together a short post showing where I've been taking the
> Windows installer for Python 3.5, since I know there are interested people
> on this list who will have valuable feedback.
> >
> > http://stevedower.id.au/blog/the-python-3-5-installer/
> >
> > Nothing is merged in yet and everything can still change, so I'm keen to
> hear whatever feedback people have. I've tried to make improvements fairly
> for first-time users through to sysadmins, but if I've missed something big
> I'd like to hear about it before we get too close to alpha 1.
> Overall, this looks good. One question - will it be possible to
> install both 32-bit and 64-bit Python on the same machine? Currently,
> you need a custom install to do this (as the default directory doesn't
> include the architecture) and IIRC there's some oddness around install
> order. It would be nice if installing both versions were a supported
> option, both for the "default" install and in custom installs.
> Also, what happens now with setting PATH? Is Python (and the scripts
> directory) added to PATH by default? If so, what happens when you
> install 2 versions of Python?
> In case it's not clear, I'm thinking of the impact on build machines,
> which often have multiple versions, in both 32- and 64-bit forms,
> installed simultaneously (but can also be used as a "normal"
> development machine, and for that purpose will want a selected Python
> version as the default one.
> Also, how does the launcher py.exe fit into the picture? Is it still
> installed into the Windows directory? What about for a user install?
> Are Python scripts associated with the launcher, and if so, how does
> it pick up the version you selected as default?
> (Sorry, that was more than one question :-))
> Paul
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