def _Chunk(items, chunk_size):
    'Breaks a long list into sub-lists of a particular size.'
    chunks = []
    for i in range(0, len(items), chunk_size):
        chunks.append(items[i:(i + chunk_size)])
    return chunks
Breaks a long list into sub-lists of a particular size.
def _Chunk(items, chunk_size):
    
    chunks = []
    for i in range(0, len(items), chunk_size):
        chunks.append(items[i:(i + chunk_size)])
    return chunks