[Python-Dev] Python 3000 Status Update (Long!) (original) (raw)

Guido van Rossum guido at python.org
Wed Jun 20 15:30:48 CEST 2007


On 6/20/07, Facundo Batista <facundo at taniquetil.com.ar> wrote:

Guido van Rossum wrote:

> I've written up a comprehensive status report on Python 3000. Please read: > > http://www.artima.com/weblogs/viewpost.jsp?thread=208549 One doubt: In Miscellaneus you say: Ordering comparisons (<, <=, >, >=) will raise TypeError by default instead of returning arbitrary results. Equality comparisons (==, !=) will compare for object identity (is, is not) by default. I guess that you're talking about comparisons between different datatypes... but you didn't explicit that in your blog. Am I right?

No. The default comparison always raises an exception. Of course, most types have a comparison that does the right thing for objects of the same type -- but they still raise an exception when compared (for ordering) to objects of different types (except subtypes or related types).

-- --Guido van Rossum (home page: http://www.python.org/~guido/)



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