[Python-Dev] len(chr(i)) = 2?

[Greg Ewing]

On 25/11/10 06:37, Alexander Belopolsky wrote:

> I don't think there is a recipe on how to fix legacy
> character-by-character processing loop such as
>
>     for c in string:
>        ...
>
> to make it iterate over code points consistently in wide and narrow
> builds.

A couple of possibilities:

1) Make things so that 'for c in string' does actually
iterate over characters rather than code units. This could
break existing code, though.

2) Provide some things like

    for c in string.chars():
      ...

    for c in string.graphemes():
      ...

where chars() and graphemes() return appropriate iterators.
(Or possibly iterable views, but that would raise the
expectation that the views could also be randomly indexed
by char or grapheme, which we probably wouldn't want to
support.)

-- 
Greg