[Python-Dev] PEP 408 -- Standard library preview package (original) (raw)

Antoine Pitrou solipsis at pitrou.net
Fri Jan 27 17:39:50 CET 2012

Hello Philippe,

On Fri, 27 Jan 2012 17:09:08 +0100 Philippe Fremy <phil at freehackers.org> wrote:

According to the PEP, the interface may change betweeen preview and final inclusion in stdlib. It would be unwise as a developer to assume that a program written for the preview version will work correctly in the stdlib version, wouldn't it ? I would use your "normal" incantation only after checking that no significant API change have occured after stdlib integration. By the way, if as Antoine suggests, the package remain available in preview even after it's accepted in the stdlib, how is the user supposed to deal with possible API changes ?

The API may change but it would probably not change much anyway. Consider e.g. the "regex" module: it aims at compatibility with the standard "re" module; there may be additional APIs (e.g. new flags), but whoever uses it with the standard "re" API would not see any difference between the preview version and the final version.

cheers

Antoine.

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