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List:       python-dev
Subject:    Re: [Python-Dev] Possible changes to handling of default encoding
From:       "M.-A. Lemburg" <mal () egenix ! com>
Date:       2010-01-26 10:45:42
Message-ID: 4B5EC7D6.2040901 () egenix ! com
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Nick Coghlan wrote:
> Tres Seaver wrote:
>>> Perhaps we could also add a warning to the open() API which warns
>>> in case a file is opened in text mode without specifying an
>>> encoding ?!
>>
>> That sounds like a good plan to me, given that backward-compatibility
>> requires keeping the guessing enabled by default.
> 
> Perhaps a switch along the lines of -t and -tt (warnings/errors for
> mixing tabs and spaces)?
> 
> So by default Python continues to guess based on the locale encoding
> (perhaps with a PYTHONTEXTENCODING to override the locale specifically
> for Python).

Right (that's why I suggested a few messages ago :-).

> Then -T might warn whenever a text file encoding is guessed rather than
> specified and -TT might raise an error.

I was thinking more along the lines of a deprecation warning,
but a command line option is good as well.

-- 
Marc-Andre Lemburg
eGenix.com

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