[Python-Dev] Proposing PEP 345 : Metadata for Python Software Packages 1.2

Tarek Ziadé ziade.tarek at gmail.com
Tue Dec 29 02:35:05 CET 2009

On Tue, Dec 29, 2009 at 2:17 AM, ssteinerX at gmail.com
<ssteinerx at gmail.com> wrote:
> On Dec 28, 2009, at 8:00 PM, Ben Finney wrote:
>> The dependency declarations are *not* Python language syntax, and there
>> is no need to consider Python language syntax in defining them.
> Agreed.
> We're also not going to be writing an operating system with them; just simple version range statement.
> I think that the range expression:
>        2.5:2.7
> is easy to read, immediately understandable, and expresses everything that needs to be said.
> Yes, it needs to be stated that the ends are inclusive, but after that, it's pretty obvious what it means at a glance

The syntax as it is already defined in the PEP can be used to define
what we need. The part that was unclear was about the meaning of
"2.5". e.g.: 2.5.0 or 2.5.x..

It became obvious in the thread that it means 2.5.x. (e.g. a range) so
there's no need to introduce any range operator, wether it's "~=" or a
new notation with ":".

IOW, since the syntax already present in the PEP is sufficient for our
needs (besides ~=) , and as long as the precise definition of "version
string" is provided,  I consider that further discussion about the
syntax itself is more or less bikeshedding.

I am now rewriting the relevant section of the PEP with the examples
we discussed in this thread, but the operators should stay the same as
they were initially: "<", ">", "<=", ">=", "==" and "!=".


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