[Python-Dev] PEP 405 (pyvenv) and system Python upgrades (original) (raw)

Chris Angelico rosuav at gmail.com
Sat May 5 10:52:33 CEST 2012

On Sat, May 5, 2012 at 6:49 AM, Carl Meyer <carl at oddbird.net> wrote:

2) In addition to the above, introduce a versioning marker in the standard library (is there one already?) and have some code somewhere (insert hand-waving here) check sys.versioninfo against the stdlib version, and fail fast with an unambiguous error if there is a mismatch. This makes the failure more explicit, but at the significant cost of making it more common: at every mismatch, not just in the apparently-rare case of a breaking change.

Variant: Could the versioning marker give a minimum and/or maximum? It'd then only cause the explicit failure in the actual case of a breaking change, and the rest of the time it could happily use any X.Y.* release.

ChrisA

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