[Python-Dev] PEP 408 -- Standard library __preview__ package

[Matt Joiner]

> __preview__ would fall into this category as well). And yet I have
> essentially no means of gaining access to any 3rd party modules,
> whether they are packaged by the distro or obtained from PyPI.  (And
> "build your own" isn't an option in many cases, if only because a C
> compiler may well not be available!) This is essentially due to
> corporate inertia and bogged down "do-nothing" policies rather than
> due dilligence or supportability concerns. But it is a reality for me
> (and many others, I suspect).
>
> Having said this, of course, the same corporate inertia means that
> Python 3.3 is a pipe-dream for me in those environments for many years
> yet. So ignoring them may be reasonable.

You clearly want access to external modules sooner. A preview
namespace addresses this indirectly. The separated stdlib versioning
concept is far superior for this use case.