simple iterator question

[andrew cooke]

Neal Becker wrote:
> How do I interleave 2 sequences into a single sequence?
>
> How do I interleave N sequences into a single sequence?

don't know if there's a better way, but

from itertools import izip

def interleave(*doodahs):
  for together in izip(*doodahs):
    for single in together:
      yield single

seems like it should work (warning: untried).

will terminate on shortest length doodah.

andrew