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Showing content from http://mail.python.org/pipermail/python-dev/2002-April/022301.html below:

[Python-Dev] Re: PEP 285: Adding a bool type

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[Guido]

> The textbooks that say that a Boolean value does
> not support arithmetic operations.  In tis
> discussion several people have tried to argue for
> such bools and claimed that that is the textbook
> definition. 

Odd. I recall learning that they support addition
(identity element False; operation spelled "or") 
and multiplication (identity element True;
operation spelled "and").

So maybe the distinction is the word "arithmetic".
Alas, my local library doesn't seem to have a copy
of Frege <wink>.

-- Gordon
http://www.mcmillan-inc.com/

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