Can I memoize a Python generator?

Question

I have a function called runquery that makes calls to a database and then yields the rows, one by one. I wrote a memoize decorator (or more accurately, I just stole

Answer 1

from itertools import tee

sequence, memoized_sequence = tee (sequence, 2)

Done.

It is easier for generators because the standard lib has this "tee" method!