lazy evaluation in Python
tim_one at email.msn.com
Sat Sep 9 20:22:40 CEST 2000
> One interesting question I've run into in trying to create a
> general-purpose lazy tuple class is slicing. In python, if you
> write foo[3:], what gets sent to __getslice__ is 3, sys.max_int.
> What will happen to that when Python supports longs as sequence
Download Python 2.0b1 and find out today <wink>. (3, sys.maxint) still gets
passed. Huge explicit bounds are clipped to fit in the platform's Python
small-int (== C's long int) range. There's really nothing else that can be
done that's backward compatible, so it will stay that way until P3K -- and
perhaps even then. Guido probably views passing giant ints to the sequence
protocol as a form of jerking off anyway <0.9 wink>.
master-of-deflecting-the-blame-ly y'rs - tim
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