python generic segmentation function to break items into sub-groups based on max size

gistfile1.txt

def segment_items(items, max_count_per_segment):
    result = []
    index = 0
    while index < len(items):
        segment = []
        segment_index = 0
        while segment_index < max_count_per_segment and index < len(items):
            item = items[index]
            segment.append(item)
            segment_index += 1
            index += 1
        result.append(segment)
    return result

def segment_items_betterer(items, max_count_per_segment):
    indices = [i for i in range(len(items)) if i % max_count_per_segment == 0]
    return [items[i:i + max_count_per_segment] for i in indices]

def segment_items_best(items, max_count_per_segment):
    for i in (i for i in xrange(len(items)) if i % max_count_per_segment == 0):
        yield items[i:i + max_count_per_segment]