str vs unicode

[John Arbash Meinel]

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On 05/27/2011 12:04 PM, Andrew Bennetts wrote:
> John Arbash Meinel wrote:
>> On 05/27/2011 05:19 AM, Robert Collins wrote:
> […]
>>> Doesn't python3 delete __unicode__ ? In the spirit of having no
>>> compatiblity concerns, after all :)
>>>
>>> -Rob
>>>
>>
>> It deleted __unicode__ because __str__ *is* __unicode__.
> 
> Right.  I think Rob's issue is how to write code that is simultaneously
> compatible with 2 and 3 with no translation step.  In that case I
> suppose __unicode__ == __str__ (or vice versa?) is probably close to
> close enough.  IIRC you can actually return unicode from __str__ in
> Python 2 (probably due to the pervasive str/unicode confusion there).
> 
> -Andrew.

If you return unicode from str it will auto-cast it back to str, and
cause the associated UnicodeEncodeErrors if you have anything that isn't
ascii in the string.

John
=:->
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