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[Python-Dev] Revised PEP 349: Allow str() to return unicodestrings
Neil Schemenauernas at arctrix.com
Thu Aug 25 19:03:32 CEST 2005
On Wed, Aug 24, 2005 at 09:11:18PM +0200, Dieter Maurer wrote:> Neil Schemenauer <nas at arctrix.com> writes on Mon, 22 Aug 2005 15:31:42 -0600:> > The code was fixed by changing> > the line "header = str(header)" to:> >> > if isinstance(header, unicode):> > header = header.encode('ascii')>> Note, that this is not equivalent to the old "str(header)":>> "str(header)" used Python's "default encoding" while the> new code uses 'ascii'.It also doesn't call __str__ if the object is not a basestringinstance. I have a hard time understanding the exact purpose ofcalling str() here. Maybe Barry can comment.> Can we get a new builtin with the exact same behaviour as> the current "str" which can be used when we do require an "str"> (and cannot use a "unicode").That fact that no code in the standard library requires such afunction (AFAIK), leads me to believe that it would not be usefulenough to be made a built-in. You would just write it yourself: def mystr(s): s = str(s) if isinstance(s, unicode): s = s.encode(sys.getdefaultencoding()) return sCheers, Neil
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