[Python-Dev] Int FutureWarnings and other 2.4 TODOs

Thomas Heller theller at python.net
Fri Dec 5 10:17:50 EST 2003

Guido van Rossum <guido at python.org> writes:

>> Hmmmm...  How important is the "less memory" angle versus the "faster"
>> angle?  Why not just add a few bytes to the long type to store an int?
>> If you're using the int, the pointer is NULL, and you're saving that
>> memory, at least.  The only harm is some extra memory in the type
>> object.
> I'd say that the "less memory" angle is pretty important.  The int
> implementation has been using every trick in the book to save memory
> from very early days on: it has the most sophisticated special-purpose
> allocator, *and* it uses a cache for popular values, *and* you really
> can't squeeze any more bits out of the structure.

IIUC, doing range(10000000) in a program somewhere allocates 10 million
integers, and these are *never* freed, they live in the cache forever.

I do not have an actual use case for this, but it seems somewhat
And the point comes up from time to time on c.l.p.


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