[Python-Dev] PEP 383: Non-decodable Bytes in System Character Interfaces

Glenn Linderman v+python at g.nevcal.com
Wed Apr 29 05:29:16 CEST 2009

On approximately 4/28/2009 7:40 PM, came the following characters from 
the keyboard of R. David Murray:
> On Tue, 28 Apr 2009 at 13:37, Glenn Linderman wrote:
>> C. File on disk with the invalid surrogate code, accessed via the str 
>> interface, no decoding happens, matches in memory the file on disk 
>> with the byte that translates to the same surrogate, accessed via the 
>> bytes interface. Ambiguity.
> Unless I'm missing something, one of these is type str, and the other is 
> type bytes, so no ambiguity.

You are missing that the bytes value would get decoded to a str; thus 
both are str; so ambiguity is possible.

Glenn -- http://nevcal.com/
A protocol is complete when there is nothing left to remove.
-- Stuart Cheshire, Apple Computer, regarding Zero Configuration Networking

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