[Python-Dev] syntactic support for sets
"Martin v. Löwis"
martin at v.loewis.de
Fri Feb 3 20:02:16 CET 2006
Donovan Baarda wrote:
> Before set() the standard way to do them was to use dicts with None
> Values... to me the "{1,2,3}" syntax would have been a logical extension
> of the "a set is a dict with no values, only keys" mindset. I don't know
> why it wasn't done this way in the first place, though I missed the
> arguments where it was rejected.
There might be many reasons; one obvious reason is that you can't spell
the empty set that way.
> Frozensets are to sets what tuples are to lists. It would be nice if
> there was another type of bracket that could be used for frozenset...
> something like ':1,2,3:'... yuk... I dunno.
Readability counts.
Regards,
Martin
More information about the Python-Dev
mailing list