hash values and equality

[Irmen de Jong]

On 22-5-2011 0:55, John Nagle wrote:
> On 5/19/2011 11:33 PM, Ulrich Eckhardt wrote:
> 
>> For that reason, it is generally useful to use immutable types like
>> integers, floats, strings and tuples thereof as keys. Since you can't change
>> them, you basically have the guarantee that they hash the same.
> 
>    Right.  It's something of a lack that Python doesn't
> have user-defined immutable objects.
> 
>                 John Nagle
> 

collections.namedtuple is rather powerful though... and can be used as key AFAIK.

Irmen