[Python-Dev] Writable doc (original) (raw)

Michael Foord fuzzyman at voidspace.org.uk
Thu Jan 19 19:40:09 CET 2012

On 19/01/2012 17:46, Ethan Furman wrote:

Guido van Rossum wrote: > We should not encourage people to write code that works with a certain > bugfix release but not with the previous bugfix release of the same > feature release.

Then what's the point of a bug-fix release? If 3.2.1 had broken threading, wouldn't we fix it in 3.2.2 and encourage folks to switch to 3.2.2? Or would we scrap 3.2 and move immediately to 3.3? (Is that more or less what happened with 3.0?)

Like it or not, this has worked this way ever since new-style classes were introduced. That has made it a de-facto feature. But what of the discrepancy between the 'type' metaclass and any other Python metaclass?

There are many discrepancies between built-in types and any Python class. Writable attributes are (generally) one of them.

Michael

Given that we haven't had any complaints about this in nearly a decade, the backport can't be important. Don't do it. Agreed. Ethan

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