[Python-ideas] Possible new itertool: comm()

[Paul Moore]

On 6 January 2015 at 18:00, Steven D'Aprano <steve at pearwood.info> wrote:
> But for what it's worth, here's my implementation which I
> think is easier to understand than yours,

Possibly - it's a trade-off between using a sentinel vs explicitly
catching the exceptions. I'm on the fence, personally.

> and covers the unfortunate
> case where you have unorderable items such as float NANs in your data.

Technically I don't think this is possible, as the input iterators
need to be sorted, and that property will be violated if there are
unorderable items in there...

Paul