[Pythonmac-SIG] CF module oddity

[Ronald Oussoren]

On Tuesday, May 6, 2003, at 11:35 Europe/Amsterdam, Jack Jansen wrote:

>
> On Monday, May 5, 2003, at 22:35 Europe/Amsterdam, Ronald Oussoren 
> wrote:
>
>> I've been playing with the Carbon.CF module, mostly because I want to 
>> add "toll-free" bridgeing to a future version of PyObjC. I noticed 
>> something strange:
>>
>> >>> import Carbon.CF
>> >>> s = Carbon.CF.CFStringCreateWithCharacters("hello")
>> >>> s.toPython()
>> u'\u6865\u6c6c'
>> >>>
>>
>> Is this intentional? Using u"hello" instead of "hello" gives a better 
>> result.
>
> This is a feature. It is not a feature which I agree with (far from 
> it:-), but a feature nonetheless.
>
> CFStringCreateWithCharacters expects a unicode string. The Python 
> format specifier for unicode strings accepts "normal" strings, and 
> interpretes them as a binary data stream containing UTF16 unicode > data.

Very usefull :-( Is this documented anywhere? The documentation in the 
section "Extracting Parameters in Extension Functions" of "Extending 
and Embedding the Python Interpreter" does note mention this misfeature.

Ronald