tuple.__hash__()

Just just at xs4all.nl
Tue Jan 6 09:40:24 CET 2004


In article <pan.2004.01.06.08.17.30.910345 at thomas-guettler.de>,
 "Thomas Guettler" <guettli at thomas-guettler.de> wrote:

> Can someone point me to the documentation
> of tuples __hash__ method?
> 
> I want to unique a list of tuples. Since
> __hash__ returns a 32 bit integer, there
> could be a situtation where two different tupples
> return the same value.

That's a basic propery of hashing in general, no?

> >>> t1=(1, 2, 3)
> >>> t1.__hash__()
> -821448277
> >>> t2=(1, 2, 3)
> >>> t2.__hash__()
> -821448277

Not sure what your point is here: you're showing that two _equal_ tuples 
have the same hash value.

> Is there a dictionary type which uses __cmp__() like
> btrees in the standard library?

I don't think so.

Just



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