def intersperse(sep, iterable):

    for i, item in enumerate(iterable):
        if i: yield sep
        yield item

# helper
Retrieve a YouTubePlaylistVideoFeed (a feed of videos on a playlist).
dataset/ETHPy150Open edgewall/trac/tracopt/versioncontrol/git/git_fs.py/intersperse--crossover with--dataset/ETHPy150Open acil-bwh/SlicerCIP/Scripted/attic/PicasaSnap/gdata/youtube/service.py/YouTubeService.GetYouTubePlaylistVideoFeed