TestPyPI can be useful for those who are not package maintainers, but want
to learn about Python Packaging and need a 'playground' to experiment with
it.


Mariatta Wijaya

On Mon, Oct 30, 2017 at 10:41 AM, Toshio Kuratomi <a.bad...@gmail.com>
wrote:

> When we locked down pypi to prevent uploading an sdist to overwrite a
> previous I remember that some people wanted a brief window to check
> for brown paper bag issues and be able to upload a new tarball in that
> window if needed.  IIRC, those people were told to use testpypi for
> that sort of thing.  Upload potential tarball to testpypi.  If it
> works, go ahead and rerun to upload to the real pypi.  If it doesn't,
> fix it and try again.
>
> This past week I decided to try out that workflow for a project that
> I'm managing the releases for and ran into a snag.  testpypi has the
> same behaviour as production pypi wherein you can only upload a given
> sdist once and afterwards it's no longer allowed.  For the use case
> above this is problematic.  It essentially changes the idea of "test
> your release on testpypi before making a release" into "You can have
> to chances to get it right if you use testpypi" which, although better
> than uploading directly to pypi, still leaves a lot of room for error
> (let's face it: I know that if I'm stuck releasing late at night due
> to time constraints and make a mistake, chances are better than normal
> that my fix won't be the perfection that my ordinary code is and could
> have other showstopper bugs that I'd want my testing to catch as well
> ;-)
>
> Is this something that we could change for testpypi?  It could be
> implemented in many ways: straight overwrite, being able to destroy a
> version so that it seems to never have existed, or being able to
> destroy and recreate a package so that it has no uploaded sdists
> recorded.
>
> On the other side of the usefulness of enabling the testing use case
> above, such a change would be a difference between testpypi and
> production pypi meaning that it would no longer be testing exactly the
> same functionality as will be deployed in production.  I'm not sure if
> that's a more important consideration or not.  I figured that unless I
> asked, I would never know the answer :-)
>
> Thanks,
> -Toshio
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