python development environment on a mac

[macports at parvis.nl]

> On 15 Mar 2017, at 08:51, Mojca Miklavec <mojca at macports.org> wrote:
> 
> Any reason why you sent the response off-list?

no excuse but it was 04:15 AM.

> I can answer, but it makes more sense to continue on the list.
> 
> But in short: you don't need virtualenv just for the sake of
> supporting both python 2 and 3.

i understand.

> Mojca