Share Code Tips

Devyn Collier Johnson devyncjohnson at gmail.com
Sat Jul 20 12:07:38 CEST 2013


On 07/19/2013 11:18 PM, Steven D'Aprano wrote:
> On Fri, 19 Jul 2013 18:08:43 -0400, Devyn Collier Johnson wrote:
>
>> As for the case-insensitive if-statements, most code uses Latin letters.
>> Making a case-insensitive-international if-statement would be
>> interesting. I can tackle that later. For now, I only wanted to take
>> care of Latin letters. I hope to figure something out for all
>> characters.
> As I showed, even for Latin letters, the trick of "if astring.lower() ==
> bstring.lower()" doesn't *quite* work, although it can be "close enough"
> for some purposes. For example, some languages treat accents as mere
> guides to pronunciation, so ö == o, while other languages treat them as
> completely different letters. Same with ligatures: in modern English, æ
> should be treated as equal to ae, but in Old English, Danish, Norwegian
> and Icelandic it is a distinct letter.
>
> Case-insensitive testing may be easier in many non-European languages,
> because they don't have cases.
>
> A full solution to the problem of localized string matching requires
> expert knowledge for each language, but a 90% solution is pretty simple:
>
> astring.casefold() == bstring.casefold()
>
> or before version 3.3, just use lowercase. It's not a perfect solution,
> but it works reasonably well if you don't care about full localization.
>
>
>
Thanks for the tips. I am learning a lot from this mailing list. I hope 
my code helped some people though.

Mahalo,
DCJ



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