[Distutils] Fwd: setuptools: Spelling < 3.1.0beta3 ?
Phillip J. Eby
pje at telecommunity.com
Sun May 4 19:49:38 CEST 2008
At 12:48 PM 5/2/2008 -0400, Alexander Michael wrote:
>On Fri, May 2, 2008 at 12:30 PM, Pete <pfein at pobox.com> wrote:
> > Hi-
> > What's the proper way to spell "any version in the 3.0.x series" if a
> > project has a 3.1.0beta3 release?
> > Specifically, CherryPy has both 3.0.2 and 3.1.0beta3
> releases. I'd like to
> > depend on any 3.0.x
> > I've tried both 'CherryPy < 3.1' and 'CherryPy < 3.1.0' in my
> > install_requires, and both cause setuptools to pull 3.1.0beta3.
> > I realize I can use 'CherryPy == 3.0.2' but that defeats the "any 3.0.x"
> > idea...
> I find this surprising as well, but the answer is:
> >>> import pkg_resources
> >>> v = pkg_resources.parse_version
> >>> v('3.1.0beta3') < v('3.1.0')
> >>> v('3.1.0beta3') < v('3.1.0a0')
Leading zeros before an alpha component are dropped from comparisons,
so you could equally say '<3.1a'.
However, what you really want is '<3.1dev', as 'dev' is the
lowest-possible precedence pre-release tag.
So, to say "any 3.0.x", you would need to say '>=3.0.1dev,
<3.1dev' (assuming you wanted to include pre-release 3.0.x versions).
> I wish it was "easier" to say "3.1.x" (as in any final sub-point
> release in the 3 series) or "1.x" (as in any final version 1 release)
> which didn't allow development, alpha, beta, candidate, etc. releases.
> Is there?
Not at the moment, no.
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