Help with sets

[Gregory Ewing]

Steve Howell wrote:

> That was the original context of my comment.  The term "symmetry" gets
> used a couple times in that PEP, and I think we're in violent
> agreement that the concept of "symmetry" is wishy-washy at best.
> 
> Here is just one example from the PEP:
> 
>       The symmetry between "if x in y" and "for x in y"
>       suggests that it should iterate over keys.

Maybe "analogy" or "similarity" would be a better word here.

-- 
Greg