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Showing content from http://mail.python.org/pipermail/python-dev/2002-August/028128.html below:

PEP 218 (sets); moving set.py to Lib

[Python-Dev] Re: PEP 218 (sets); moving set.py to Lib [Python-Dev] Re: PEP 218 (sets); moving set.py to LibEric S. Raymond esr@thyrsus.com
Wed, 21 Aug 2002 00:16:47 -0400
Fran=E7ois Pinard <pinard@iro.umontreal.ca>:
> I never saw `|' nor `&' in literature, except `|' which means "such tha=
t"
> in set comprehensions, as Pythoneers would be tempted to say!  On the
> other hand, for programmers, `|' and `&' are rather natural and easy.

Now that I think of it, I've never seen a mathematician use this at all.
But I agree that it's a good choice for programmersl
=20
> Eric has offered the idea of adding Cartesian product, and despite the
> usual notation is a tall thin `X', maybe it would be nice reserving `*'
> for that?=20

Mildly in favor, but I wouldn't cry if it didn't happen.
--=20
		<a href=3D"http://www.tuxedo.org/~esr/">Eric S. Raymond</a>



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