The itertools page https://docs.python.org/3.6/library/itertools.html says "Combinatoric generators:" above the table with product(), permutations(), etc. But as far as I understand, they're not generators and they don't produce generator iterators. I think the table title should be "Combinatoric iterators:" instead, in line with "Infinite Iterators:" and "Iterators terminating on the shortest input sequence:" of the two tables above it.

Reference:
https://docs.python.org/3/glossary.html#term-generator

The term is used in the generic sense rather than the sense of an actual type.  That said, I don't mind changing "Combinatoric generators" to "Combinatoric iterators" for 3.6 and 3.7.   Otherwise, this isn't worth the backport effort.