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

MRAB python at mrabarnett.plus.com
Mon Dec 28 03:03:08 CET 2009

Martin v. Löwis wrote:

No application developer will quickly figure out what a tilde means. Maybe it means 'roughly', but it requires too much thought and is ambiguous. 2.5 is not roughly 2.5.2. It is the same exactly.

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. Does that mean we should add "or"?

 Requires-Python: 2.5 or 2.6

Should we also use "and" instead of ","?

 Requires-Python: >= 2.5 and < 2.6

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