def chunked(seq, n):
    for i in xrange(0, len(seq), n):
        yield seq[i:i+n]
Returns True if the key exists
dataset/ETHPy150Open bueda/django-comrade/comrade/utils.py/chunked--crossover with--dataset/ETHPy150Open darcyliu/storyboard/boto/s3/key.py/Key.exists