[Python-Dev] draft pep: backwards compatibility
Tres Seaver
tseaver at palladion.com
Fri Jun 19 19:47:22 CEST 2009
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Antoine Pitrou wrote:
> There is always the possibility that a new feature breaks existing code, for
> example because it relies on a similarly named attribute, or on some obscure
> internal condition. I think this should be qualified so that it only applies
> when e.g. a fair number of third-party apps or libraries are broken.
I think the recent asyncore changes are a good test case here: they
broke major consumers of the package (Zope, supervisord), but it wasn't
obvious that the breakage would occur, because the API of the package
wasn't clear: the apps broken by the change were forced to rely on
stuff that the subsequent maintainer considered "implementation details."
Tres.
- --
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Tres Seaver +1 540-429-0999 tseaver at palladion.com
Palladion Software "Excellence by Design" http://palladion.com
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