[Python-ideas] Non-boolean return from contains (original) (raw)

Greg Ewing greg.ewing at canterbury.ac.nz
Tue Jul 27 08:33:28 CEST 2010

Guido van Rossum wrote:

The other odd ducks are 'and' and 'or',

Well, I tried to do something about that with the Overloaded Boolean Operators proposal, but it seems to have met with a not-very-enthusiastic response.

Have you had any more thoughts about it? Do you think it's a problem worth solving, or are '&' and '|' good enough? Or would you rather see some completely different mechanism introduced for getting parse trees from expressions, a la LINQ?

I forget in which camp 'not' falls.

If I remember correctly, it's not currently overridable independently from bool, but there would be no difficulty in making it so, because there is no control flow involved.

-- Greg

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