[Tim Peters]: > Trent, you should be on the Python-Dev list if you're going to (as I sure > hope you are!) be working on Python internals. This requires Guido's > approval, but in his temporary absence I'm channeling his > approval for you. > Guido can take it up with David Ascher if he doesn't like that (*nobody* > messes with David -- the guy is a hard core psycho). Thank you Tim! I went through the mailman subsription procedure and got the expected "Subscription was deferred..." message. Will that sit quietly in Guido's or Barry's mailbox? > > [on id] > > This means that my System A and System B (above) get different > > resultant object types for id() just because the compiler used > > for their Python interpreter uses a different data model. > > So long as they're using different memory models, and so long as Python > distinguishes between int and long, I'd say that's *expected*. id()'s are > valid only for the life of a single run, and, as Greg said, the only thing > you can do with them that's guaranteed to work is compare them > for equality > (well, you can use cmp on 'em too, but that's unusual and will work fine > anyway). Unfortunately, the couple of examples that I picked to show that some improper sizeof() assumptions still existed in the code included the id() function. I did not mean to dwell on id() but rather that I thought it would be reasonable that the Python core should run identically on (A) Trillian (Linux64) on itanium (Intel64) and on (B) Win64 on itanium. Maybe not. [Tim's good explanation of why a data typename abstraction layer is a bad thing for Python] Okay, I am convinced. My idealism is showing through. > > Well, just using 'int' carries the implicit assumption that 'int' > > is at least 16-bits wide. > > ANSI C guarantees that it is, BTW. Surprise! I should know that. I suppose I was basing by assumptions on a port of gcc to the HC11 (8-bit microprocessor) that I onced worked with that had 8-bit ints. Trent
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