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Mon Jun 18 08:23:59 CEST 2012 · https://mail.python.org/pipermail/python-dev/2012-June/120358.html

On 6/18/2012 2:06 AM, "Martin v. Löwis" wrote:

>> Hm. I still encounter enough environments that don't know how to display
>> such characters that I would prefer to have a rock solid \u escape
>> mechanism.
>
> If you want to use them under the revised PEP 414, you will have to
> avoid making them raw, and just use a plain u prefix. IOW, you need
> to double all backslashes that you want to stand on their own, and
> then use \u escapes to denote non-typable characters.

And such literals will mean the same thing in 2.x and 3.3+.

-- 
Terry Jan Reedy

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[Python-Dev] Raw string syntax inconsistency