[Python-ideas] isascii()/islatin1()/isbmp() (original) (raw)

Antoine Pitrou solipsis at pitrou.net
Sat Jun 30 18:43:16 CEST 2012

On Sun, 1 Jul 2012 02:14:23 +1000 Nick Coghlan <ncoghlan at gmail.com> wrote:

On Sun, Jul 1, 2012 at 2:03 AM, Serhiy Storchaka <storchaka at gmail.com> wrote: > As shown in issue #15016 [1], there is a use cases when it is useful to > determine that string can be encoded in ASCII or Latin1. In working with Tk > or Windows console applications can be useful to determine that string can > be encoded in UCS2. C API provides interface for this, but at Python level > it is not available. > > I propose to add to strings class new methods: isascii(), islatin1() and > isbmp() (in addition to such methods as isalpha() or isdigit()). The > implementation will be trivial.

Why not just expose maxcodepoint directly instead of adding three new methods?

Because it's really an implementation detail. We don't want to carry around such a legacy. Besides, we don't know the max code point for sure, only an upper bound of it (and, implicitly, also a lower bound).

So while I'm -0 on the methods (calling encode() is as simple), I'm -1 on max_code_point.

Regards

Antoine.

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