[Python-3000] Set literal

[Stephen J. Turnbull]

Greg Ewing writes:

 > But list(genexp) gives you very nearly the same thing [as a list
 > comprehension] -- so near that I find it hard to imagine anyone
 > would have thought to suggest a dedicated LC syntax if genexps had
 > already been present in the language.

Point taken, except that I find your faith in human nature
touching.<wink>  *Somebody* would have suggested it!