Serhiy Storchaka added the comment:

Perhaps we need not iter_unpack(), but a grouper (some sort of)?

def grouper(seq, size):
    for i in range(0, len(seq), size):
        yield seq[i: i + size]

unpack = struct.Struct('!I').unpack
for chunk in grouper(data, 4):
    word, = unpack(chunk)
    ...

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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue17804>
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