[Python-3000] sets in P3K?

[Georg Brandl]

Kay Schluehr wrote:
> Talin schrieb:
> 
>>A set with no elements is:
>>
>>   set()
>>
>>Alternatively, you could take the tuple idea one step further:
>>
>>   {,}
>>  
>>
> If you want to simulate the mathematical notion of an empty set I would 
> say that {/} has a stronger mnemonic appeal.

It also has a strong feeling of arbitraryness.

> Furthermore: what about notions of infinite sets?

Can you elaborate on that?

Georg