[Python-Dev] Proposing PEP 345 : Metadata for Python Software Packages 1.2 (original) (raw)

Stephen J. Turnbull stephen at xemacs.org
Mon Dec 28 06:28:08 CET 2009

david.lyon at preisshare.net writes:

Before we had : Requires-Python: 2.5, 2.6

That made much more sense. It was simple and unambiguous, and is relevant to typical packaging scenarios.

Unfortunately, it is fairly ambiguous, and makes no sense. It means "requires Python 2.5 AND requires Python 2.6", which is a requirement that no single version can meet.

No, it means a library requires either python 2.5 OR python 2.6 to be installed properly.

If Martin and the SIG disagree on the interpretation (and I see Martin's point: in ">=2.5, <2.6" the comma is a conjunction, not a disjunction), that's too much ambiguity for me.

-1

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