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Xref: csiph.com comp.lang.python:51188

24.07.13 21:15, Chris Angelico написав(ла):
> To my mind, exposing UTF-16
> surrogates to the application is a bug to be fixed, not a feature to
> be maintained.

Python 3 uses code points from U+DC80 to U+DCFF (which are in surrogates 
area) to represent undecodable bytes with surrogateescape error handler.