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On 01/03/2011 09:44 PM, Victor Stinner wrote:
> Hi,
> 
> In the PEP 3333, I read:
> --------------
> import os, sys
> 
> enc, esc = sys.getfilesystemencoding(), 'surrogateescape'
> 
> def wsgi_string(u):
>     # Convert an environment variable to a WSGI "bytes-as-unicode"
> string
>     return u.encode(enc, esc).decode('iso-8859-1')
> 
> def run_with_cgi(application):
>     environ = {k: wsgi_string(v) for k,v in os.environ.items()}
>     environ['wsgi.input']        = sys.stdin
>     environ['wsgi.errors']       = sys.stderr
>     environ['wsgi.version']      = (1, 0)
> ...
> --------------
> 
> What is this horrible encoding "bytes-as-unicode"? os.environ is
> supposed to be correctly decoded and contain valid unicode characters.
> If WSGI uses another encoding than the locale encoding (which is a bad
> idea), it should use os.environb and decodes keys and values using its
> own encoding.
> 
> If you really want to store bytes in unicode, str is not the right type:
> use the bytes type and use os.environb instead.

I'm not clear on the semantics here, but I'm pretty sure you'll find
that the web-SIG does know them well.  I have CC'ed that list (via gmane).

Note that Guido just recently wrote on that list that he considers that
PEP to be de facto accepted.


Tres.
- -- 
===================================================================
Tres Seaver          +1 540-429-0999          tsea...@palladion.com
Palladion Software   "Excellence by Design"    http://palladion.com
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