Performance of int/long in Python 3
Ian Kelly
ian.g.kelly at gmail.com
Sat Apr 6 21:58:02 EDT 2013
On Sat, Apr 6, 2013 at 7:29 PM, Steven D'Aprano
<steve+comp.lang.python at pearwood.info> wrote:
> For some definition of "easily".
>
> if implementation == "CPython":
> if version < "3.3":
> if sys.maxunicode exists:
> use it to decide whether this is a wide or narrow build
> if a wide build: return 4
> else: return 2
> else:
> ???
> elif version == "3.3":
> scan the string, in some efficient or inefficient way
> return 1, 2, 4 depending on the largest character you find
> else:
> ???
> else:
> ???
None of which goes away if a char width function is added to 3.4 and
you still want to support earlier versions as this does. It just adds
another "if".
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