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Tue May 16 19:16:22 CEST 2006 · https://mail.python.org/pipermail/python-dev/2006-May/065029.html

On 5/11/06, Vladimir 'Yu' Stepanov <vys at renet.ru> wrote:
> If for Python-3000 similar it will be shown concerning types
> str(), int(), complex() and so on, and the type of exceptions
> will strongly vary, it will make problematic redefinition of
> behavior of function of sorting.

I don't see what you mean by "redefinition of behavior of function of
sorting".  Is this something a Python programmer might want to do?
Can you give an example?

On 5/16/06, Vladimir 'Yu' Stepanov <vys at renet.ru> wrote:
> It will be possible it conveniently to use as exception of
> management by a stream, for indication of necessity to involve
> `.__r(eq|ne|le|lt|ge|gt|cmp)__()' a method. This kind of a class
> can carry out function, similarly to StopIteration for `.next()'.

There are no .__r(eq|ne|le|lt|ge|gt|cmp)__() methods, for a logical
reason which you might enjoy deducing yourself...

> At present time similar function is carried out with exception
> NotImplemented. This exception is generated in a number of
> mathematical operations. For this reason I ask to consider an
> opportunity of creation of a new class.

Can you explain this?  NotImplemented isn't an exception.
(NotImplementedError is, but that's something quite different.)
NotImplemented has exactly one purpose in Python, as far as I can
tell.  What mathematical operations do you mean?

-j

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[Python-Dev] total ordering.