From 0a9a6d3e539b2d541504a0714623444f37d7f298 Mon Sep 17 00:00:00 2001 From: myhloli Date: Tue, 15 Oct 2024 01:30:27 +0800 Subject: [PATCH 1/4] fix(magic_pdf): include List and Index block types in processing Add List and Index to the list of block types being processed in the draw_bbox.py file. This inclusion ensures that these block types are handled similarly to other text-containing blocks, improving the overall document processing accuracy and consistency. --- magic_pdf/libs/draw_bbox.py | 2 ++ 1 file changed, 2 insertions(+) diff --git a/magic_pdf/libs/draw_bbox.py b/magic_pdf/libs/draw_bbox.py index 550a4cec..225280f1 100644 --- a/magic_pdf/libs/draw_bbox.py +++ b/magic_pdf/libs/draw_bbox.py @@ -237,6 +237,8 @@ def get_span_info(span): BlockType.Text, BlockType.Title, BlockType.InterlineEquation, + BlockType.List, + BlockType.Index, ]: for line in block['lines']: for span in line['spans']: From fdcb49d32768fbbf0b317444c988e86178e0ebe6 Mon Sep 17 00:00:00 2001 From: myhloli Date: Tue, 15 Oct 2024 11:11:57 +0800 Subject: [PATCH 2/4] refactor(para_split_v3): merge list and index block detection - Combine __is_list_block() and __is_index_block() into a single function __is_list_or_index_block() - Simplify block type determination logic - Remove redundant code and improve readability - Optimize block merging process --- magic_pdf/para/para_split_v3.py | 114 ++++++++++++-------------------- 1 file changed, 43 insertions(+), 71 deletions(-) diff --git a/magic_pdf/para/para_split_v3.py b/magic_pdf/para/para_split_v3.py index 0ee2004a..989adfe0 100644 --- a/magic_pdf/para/para_split_v3.py +++ b/magic_pdf/para/para_split_v3.py @@ -15,6 +15,9 @@ class ListLineTag: def __process_blocks(blocks): + # 对所有block预处理 + # 1.通过title和interline_equation将block分组 + # 2.bbox边界根据line信息重置 result = [] current_group = [] @@ -47,11 +50,15 @@ def __process_blocks(blocks): return result -def __is_list_block(block): +def __is_list_or_index_block(block): # 一个block如果是list block 应该同时满足以下特征 # 1.block内有多个line 2.block 内有多个line左侧顶格写 3.block内有多个line 右侧不顶格（狗牙状） # 1.block内有多个line 2.block 内有多个line左侧顶格写 3.多个line以endflag结尾 # 1.block内有多个line 2.block 内有多个line左侧顶格写 3.block内有多个line 左侧不顶格 + + # index block 是一种特殊的list block + # 一个block如果是index block 应该同时满足以下特征 + # 1.block内有多个line 2.block 内有多个line两侧均顶格写 3.line的开头或者结尾均为数字 if len(block['lines']) >= 3: first_line = block['lines'][0] line_height = first_line['bbox'][3] - first_line['bbox'][1] @@ -60,6 +67,7 @@ def __is_list_block(block): left_close_num = 0 left_not_close_num = 0 right_not_close_num = 0 + right_close_num = 0 lines_text_list = [] for line in block['lines']: @@ -79,68 +87,18 @@ def __is_list_block(block): # logger.info(f"{line_text}, {block['bbox_fs']}, {line['bbox']}") left_not_close_num += 1 - # 计算右侧是否不顶格，拍脑袋用0.3block宽度做阈值 - closed_area = 0.3 * block_weight - # closed_area = 5 * line_height - if block['bbox_fs'][2] - line['bbox'][2] > closed_area: - right_not_close_num += 1 - - # 判断lines_text_list中的元素是否有超过80%都以LIST_END_FLAG结尾 - line_end_flag = False - if len(lines_text_list) > 0: - num_end_count = 0 - for line_text in lines_text_list: - if len(line_text) > 0: - if line_text[-1] in LIST_END_FLAG: - num_end_count += 1 - - if num_end_count / len(lines_text_list) >= 0.8: - line_end_flag = True - - if left_close_num >= 2 and (right_not_close_num >= 2 or line_end_flag or left_not_close_num >= 2): - for line in block['lines']: - if abs(block['bbox_fs'][0] - line['bbox'][0]) < line_height / 2: - line[ListLineTag.IS_LIST_START_LINE] = True - if abs(block['bbox_fs'][2] - line['bbox'][2]) > line_height: - line[ListLineTag.IS_LIST_END_LINE] = True - - return True - else: - return False - else: - return False - - -def __is_index_block(block): - # 一个block如果是index block 应该同时满足以下特征 - # 1.block内有多个line 2.block 内有多个line两侧均顶格写 3.line的开头或者结尾均为数字 - if len(block['lines']) >= 3: - first_line = block['lines'][0] - line_height = first_line['bbox'][3] - first_line['bbox'][1] - - left_close_num = 0 - right_close_num = 0 - - lines_text_list = [] - for line in block['lines']: - - # 计算line左侧顶格数量是否大于2，是否顶格用abs(block['bbox_fs'][0] - line['bbox'][0]) < line_height/2 来判断 - if abs(block['bbox_fs'][0] - line['bbox'][0]) < line_height / 2: - left_close_num += 1 - - # 计算右侧是否不顶格 + # 计算右侧是否顶格 if abs(block['bbox_fs'][2] - line['bbox'][2]) < line_height / 2: right_close_num += 1 + else: + # 右侧不顶格情况下是否有一段距离，拍脑袋用0.3block宽度做阈值 + closed_area = 0.3 * block_weight + # closed_area = 5 * line_height + if block['bbox_fs'][2] - line['bbox'][2] > closed_area: + right_not_close_num += 1 - line_text = "" - - for span in line['spans']: - span_type = span['type'] - if span_type == ContentType.Text: - line_text += span['content'].strip() - - lines_text_list.append(line_text) - + # 判断lines_text_list中的元素是否有超过80%都以LIST_END_FLAG结尾 + line_end_flag = False # 判断lines_text_list中的元素是否有超过80%都以数字开头或都以数字结尾 line_num_flag = False if len(lines_text_list) > 0: @@ -148,23 +106,36 @@ def __is_index_block(block): num_end_count = 0 for line_text in lines_text_list: if len(line_text) > 0: + if line_text[-1] in LIST_END_FLAG: + num_end_count += 1 if line_text[0].isdigit(): num_start_count += 1 if line_text[-1].isdigit(): num_end_count += 1 + if num_end_count / len(lines_text_list) >= 0.8: + line_end_flag = True + if num_start_count / len(lines_text_list) >= 0.8 or num_end_count / len(lines_text_list) >= 0.8: line_num_flag = True if left_close_num >= 2 and right_close_num >= 2 and line_num_flag: for line in block['lines']: line[ListLineTag.IS_LIST_START_LINE] = True + return BlockType.Index - return True + elif left_close_num >= 2 and (right_not_close_num >= 2 or line_end_flag or left_not_close_num > 2): + for line in block['lines']: + if abs(block['bbox_fs'][0] - line['bbox'][0]) < line_height / 2: + line[ListLineTag.IS_LIST_START_LINE] = True + if abs(block['bbox_fs'][2] - line['bbox'][2]) > line_height: + line[ListLineTag.IS_LIST_END_LINE] = True + + return BlockType.List else: - return False + return BlockType.Text else: - return False + return BlockType.Text def __merge_2_text_blocks(block1, block2): @@ -206,12 +177,11 @@ def __para_merge_page(blocks): for text_blocks_group in page_text_blocks_groups: if len(text_blocks_group) > 0: - # 需要先在合并前对所有block判断是否为list block + # 需要先在合并前对所有block判断是否为list or index block for block in text_blocks_group: - if __is_list_block(block): - block['type'] = BlockType.List - elif __is_index_block(block): - block['type'] = BlockType.Index + block_type = __is_list_or_index_block(block) + block['type'] = block_type + # logger.info(f"{block['type']}:{block}") if len(text_blocks_group) > 1: # 倒序遍历 @@ -224,10 +194,12 @@ def __para_merge_page(blocks): if current_block['type'] == 'text' and prev_block['type'] == 'text': __merge_2_text_blocks(current_block, prev_block) - if current_block['type'] == BlockType.List and prev_block['type'] == BlockType.List: - __merge_2_list_blocks(current_block, prev_block) - if current_block['type'] == BlockType.Index and prev_block['type'] == BlockType.Index: + elif ( + (current_block['type'] == BlockType.List and prev_block['type'] == BlockType.List) or + (current_block['type'] == BlockType.Index and prev_block['type'] == BlockType.Index) + ): __merge_2_list_blocks(current_block, prev_block) + else: continue From 7e301b849b96616559a0da19ec52dae1b886d5f8 Mon Sep 17 00:00:00 2001 From: myhloli Date: Tue, 15 Oct 2024 20:16:05 +0800 Subject: [PATCH 3/4] refactor(pdf): adjust span filling threshold in block construction Increased the threshold for filling spans in blocks from 0.3 to 0.5 to improve the accuracy of block formation. This change helps refine the grouping of spans into blocks, potentially enhancing the overall structure and readability of the PDF content. --- magic_pdf/pdf_parse_union_core_v2.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/magic_pdf/pdf_parse_union_core_v2.py b/magic_pdf/pdf_parse_union_core_v2.py index f28e0d3c..7f01bd50 100644 --- a/magic_pdf/pdf_parse_union_core_v2.py +++ b/magic_pdf/pdf_parse_union_core_v2.py @@ -360,7 +360,7 @@ def parse_page_core(pdf_docs, magic_model, page_id, pdf_bytes_md5, imageWriter, need_drop, drop_reason) '''将span填入blocks中''' - block_with_spans, spans = fill_spans_in_blocks(all_bboxes, spans, 0.3) + block_with_spans, spans = fill_spans_in_blocks(all_bboxes, spans, 0.5) '''对block进行fix操作''' fix_blocks = fix_block_spans(block_with_spans, img_blocks, table_blocks) From 244b86844342ae6dec20f73b19ffe7e1e810abe1 Mon Sep 17 00:00:00 2001 From: myhloli Date: Tue, 15 Oct 2024 20:17:08 +0800 Subject: [PATCH 4/4] fix(split_v3): Fix the rule adaptation for some special list samples. --- magic_pdf/para/para_split_v3.py | 91 ++++++++++++++++++++++++++------- 1 file changed, 73 insertions(+), 18 deletions(-) diff --git a/magic_pdf/para/para_split_v3.py b/magic_pdf/para/para_split_v3.py index 989adfe0..7a26b2d8 100644 --- a/magic_pdf/para/para_split_v3.py +++ b/magic_pdf/para/para_split_v3.py @@ -69,6 +69,17 @@ def __is_list_or_index_block(block): right_not_close_num = 0 right_close_num = 0 lines_text_list = [] + + multiple_para_flag = False + last_line = block['lines'][-1] + # 如果首行左边不顶格而右边顶格,末行左边顶格而右边不顶格 （第一行可能可以右边不顶格） + if (first_line['bbox'][0] - block['bbox_fs'][0] > line_height / 2 and + # block['bbox_fs'][2] - first_line['bbox'][2] < line_height and + abs(last_line['bbox'][0] - block['bbox_fs'][0]) < line_height / 2 and + block['bbox_fs'][2] - last_line['bbox'][2] > line_height + ): + multiple_para_flag = True + for line in block['lines']: line_text = "" @@ -81,14 +92,14 @@ def __is_list_or_index_block(block): lines_text_list.append(line_text) # 计算line左侧顶格数量是否大于2，是否顶格用abs(block['bbox_fs'][0] - line['bbox'][0]) < line_height/2 来判断 - if abs(block['bbox_fs'][0] - line['bbox'][0]) < line_height/2: + if abs(block['bbox_fs'][0] - line['bbox'][0]) < line_height / 2: left_close_num += 1 elif line['bbox'][0] - block['bbox_fs'][0] > line_height: # logger.info(f"{line_text}, {block['bbox_fs']}, {line['bbox']}") left_not_close_num += 1 # 计算右侧是否顶格 - if abs(block['bbox_fs'][2] - line['bbox'][2]) < line_height / 2: + if abs(block['bbox_fs'][2] - line['bbox'][2]) < line_height: right_close_num += 1 else: # 右侧不顶格情况下是否有一段距离，拍脑袋用0.3block宽度做阈值 @@ -101,35 +112,73 @@ def __is_list_or_index_block(block): line_end_flag = False # 判断lines_text_list中的元素是否有超过80%都以数字开头或都以数字结尾 line_num_flag = False + num_start_count = 0 + num_end_count = 0 + flag_end_count = 0 if len(lines_text_list) > 0: - num_start_count = 0 - num_end_count = 0 for line_text in lines_text_list: if len(line_text) > 0: if line_text[-1] in LIST_END_FLAG: - num_end_count += 1 + flag_end_count += 1 if line_text[0].isdigit(): num_start_count += 1 if line_text[-1].isdigit(): num_end_count += 1 - if num_end_count / len(lines_text_list) >= 0.8: + if flag_end_count / len(lines_text_list) >= 0.8: line_end_flag = True if num_start_count / len(lines_text_list) >= 0.8 or num_end_count / len(lines_text_list) >= 0.8: line_num_flag = True - if left_close_num >= 2 and right_close_num >= 2 and line_num_flag: + # 有的目录右侧不贴边, 目前认为左边或者右边有一边全贴边，且符合数字规则极为index + if ((left_close_num/len(block['lines']) >= 0.8 or right_close_num/len(block['lines']) >= 0.8) + and line_num_flag + ): for line in block['lines']: line[ListLineTag.IS_LIST_START_LINE] = True return BlockType.Index - elif left_close_num >= 2 and (right_not_close_num >= 2 or line_end_flag or left_not_close_num > 2): - for line in block['lines']: - if abs(block['bbox_fs'][0] - line['bbox'][0]) < line_height / 2: - line[ListLineTag.IS_LIST_START_LINE] = True - if abs(block['bbox_fs'][2] - line['bbox'][2]) > line_height: - line[ListLineTag.IS_LIST_END_LINE] = True + elif left_close_num >= 2 and ( + right_not_close_num >= 2 or line_end_flag or left_not_close_num >= 2) and not multiple_para_flag: + # 处理一种特殊的没有缩进的list，所有行都贴左边，通过右边的空隙判断是否是item尾 + if left_close_num / len(block['lines']) > 0.9: + # 这种是每个item只有一行，且左边都贴边的短item list + if flag_end_count == 0 and right_close_num / len(block['lines']) < 0.5: + for line in block['lines']: + if abs(block['bbox_fs'][0] - line['bbox'][0]) < line_height / 2: + line[ListLineTag.IS_LIST_START_LINE] = True + # 这种是大部分line item 都有结束标识符的情况，按结束标识符区分不同item + elif line_end_flag: + for i, line in enumerate(block['lines']): + if lines_text_list[i][-1] in LIST_END_FLAG: + line[ListLineTag.IS_LIST_END_LINE] = True + if i + 1 < len(block['lines']): + block['lines'][i+1][ListLineTag.IS_LIST_START_LINE] = True + # line item基本没有结束标识符，而且也没有缩进，按右侧空隙判断哪些是item end + else: + line_start_flag = False + for i, line in enumerate(block['lines']): + if line_start_flag: + line[ListLineTag.IS_LIST_START_LINE] = True + line_start_flag = False + elif abs(block['bbox_fs'][2] - line['bbox'][2]) > line_height: + line[ListLineTag.IS_LIST_END_LINE] = True + line_start_flag = True + # 一种有缩进的特殊有序list,start line 左侧不贴边且以数字开头，end line 以 IS_LIST_END_LINE 结尾且数量和start line 一致 + elif num_start_count == flag_end_count: # 简单一点先不考虑左侧不贴边的情况 + for i, line in enumerate(block['lines']): + if lines_text_list[i][0].isdigit(): + line[ListLineTag.IS_LIST_START_LINE] = True + if lines_text_list[i][-1] in LIST_END_FLAG: + line[ListLineTag.IS_LIST_END_LINE] = True + else: + # 正常有缩进的list处理 + for line in block['lines']: + if abs(block['bbox_fs'][0] - line['bbox'][0]) < line_height / 2: + line[ListLineTag.IS_LIST_START_LINE] = True + if abs(block['bbox_fs'][2] - line['bbox'][2]) > line_height: + line[ListLineTag.IS_LIST_END_LINE] = True return BlockType.List else: @@ -142,12 +191,19 @@ def __merge_2_text_blocks(block1, block2): if len(block1['lines']) > 0: first_line = block1['lines'][0] line_height = first_line['bbox'][3] - first_line['bbox'][1] - if abs(block1['bbox_fs'][0] - first_line['bbox'][0]) < line_height/2: + block1_weight = block1['bbox'][2] - block1['bbox'][0] + block2_weight = block2['bbox'][2] - block2['bbox'][0] + min_block_weight = min(block1_weight, block2_weight) + if abs(block1['bbox_fs'][0] - first_line['bbox'][0]) < line_height / 2: last_line = block2['lines'][-1] if len(last_line['spans']) > 0: last_span = last_line['spans'][-1] line_height = last_line['bbox'][3] - last_line['bbox'][1] - if abs(block2['bbox_fs'][2] - last_line['bbox'][2]) < line_height and not last_span['content'].endswith(LINE_STOP_FLAG): + if (abs(block2['bbox_fs'][2] - last_line['bbox'][2]) < line_height and + not last_span['content'].endswith(LINE_STOP_FLAG) and + # 两个block宽度差距超过2倍也不合并 + abs(block1_weight - block2_weight) < min_block_weight + ): if block1['page_num'] != block2['page_num']: for line in block1['lines']: for span in line['spans']: @@ -160,7 +216,6 @@ def __merge_2_text_blocks(block1, block2): def __merge_2_list_blocks(block1, block2): - if block1['page_num'] != block2['page_num']: for line in block1['lines']: for span in line['spans']: @@ -185,7 +240,7 @@ def __para_merge_page(blocks): if len(text_blocks_group) > 1: # 倒序遍历 - for i in range(len(text_blocks_group)-1, -1, -1): + for i in range(len(text_blocks_group) - 1, -1, -1): current_block = text_blocks_group[i] # 检查是否有前一个块 @@ -221,7 +276,7 @@ def para_split(pdf_info_dict, debug_mode=False): if __name__ == '__main__': - input_blocks = [{'type': 'text', 'bbox': [19, 79, 285, 95], 'lines': [{'bbox': [21.360000610351562, 81.50750732421875, 287.69000244140625, 93.62750244140625], 'spans': [{'bbox': [21.360000610351562, 81.62750244140625, 170.3000030517578, 93.62750244140625], 'content': '嘉和美康（688246）/计算机', 'type': 'text', 'score': 1.0}, {'bbox': [170.3000030517578, 81.62750244140625, 176.3000030517578, 93.62750244140625], 'content': ' ', 'type': 'text', 'score': 1.0}, {'bbox': [181.22000122070312, 81.50750732421875, 281.8052062988281, 93.50750732421875], 'content': '证券研究报告/公司点评', 'type': 'text', 'score': 1.0}, {'bbox': [281.69000244140625, 81.50750732421875, 287.69000244140625, 93.50750732421875], 'content': ' ', 'type': 'text', 'score': 1.0}], 'index': 0}], 'index': 0, 'page_num': 'page_0', 'bbox_fs': [21.360000610351562, 81.50750732421875, 287.69000244140625, 93.62750244140625]}, {'type': 'title', 'bbox': [18, 109, 124, 123], 'lines': [{'bbox': [21.360000610351562, 101.70799255371094, 98.47967529296875, 116.21743774414062], 'spans': [{'bbox': [21.360000610351562, 101.70799255371094, 98.47967529296875, 116.21743774414062], 'content': '[Table_Industry] ', 'type': 'text', 'score': 1.0}], 'index': 1}, {'bbox': [21.1200008392334, 110.3074951171875, 129.5640106201172, 122.3074951171875], 'spans': [{'bbox': [21.1200008392334, 110.3074951171875, 129.5640106201172, 122.3074951171875], 'content': '评级：买入（维持）', 'type': 'text', 'score': 1.0}], 'index': 2}], 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1.0}, {'bbox': [301.8500061035156, 614.4027709960938, 304.618896484375, 628.1177368164062], 'content': ' ', 'type': 'text', 'score': 1.0}], 'index': 48}], 'index': 44.5, 'page_num': 'page_0'}, {'type': 'text', 'bbox': [200, 646, 577, 690], 'lines': [{'bbox': [201.88999938964844, 645.552978515625, 574.8973999023438, 659.238037109375], 'spans': [{'bbox': [201.88999938964844, 647.7006225585938, 310.00994873046875, 657.66064453125], 'content': '投资建议：我们预计公司', 'type': 'text', 'score': 1.0}, {'bbox': [312.5299987792969, 645.552978515625, 384.72003173828125, 659.238037109375], 'content': '2024/2025/2026', 'type': 'text', 'score': 1.0}, {'bbox': [384.72003173828125, 647.7006225585938, 447.2890625, 657.66064453125], 'content': ' 年收入分别为', 'type': 'text', 'score': 1.0}, {'bbox': [449.8299865722656, 645.552978515625, 526.9088745117188, 659.238037109375], 'content': '9.03/11.48/14.47 ', 'type': 'text', 'score': 1.0}, {'bbox': [526.9000244140625, 647.7006225585938, 574.8973999023438, 657.66064453125], 'content': '亿元，净利', 'type': 'text', 'score': 1.0}], 'index': 49}, {'bbox': [201.88999938964844, 661.1529541015625, 574.98876953125, 674.8380126953125], 'spans': [{'bbox': [201.88999938964844, 663.3005981445312, 241.7300262451172, 673.2606201171875], 'content': '润分别为', 'type': 'text', 'score': 1.0}, {'bbox': [241.85000610351562, 661.1529541015625, 311.3388977050781, 674.8380126953125], 'content': ' 0.95/1.20/1.60 ', 'type': 'text', 'score': 1.0}, {'bbox': [311.3299865722656, 663.3005981445312, 361.239501953125, 673.2606201171875], 'content': '亿元，对应', 'type': 'text', 'score': 1.0}, {'bbox': [364.989990234375, 661.1529541015625, 378.35333251953125, 674.8380126953125], 'content': 'PE', 'type': 'text', 'score': 1.0}, {'bbox': [378.35333251953125, 663.3005981445312, 411.8995361328125, 673.2606201171875], 'content': ' 分别为', 'type': 'text', 'score': 1.0}, {'bbox': [411.9100036621094, 661.1529541015625, 481.42193603515625, 674.8380126953125], 'content': ' 24.1/19.0/14.3', 'type': 'text', 'score': 1.0}, {'bbox': [481.42193603515625, 663.3005981445312, 574.98876953125, 673.2606201171875], 'content': ' 倍。考虑公司业绩高', 'type': 'text', 'score': 1.0}], 'index': 50}, {'bbox': [201.88999938964844, 676.802734375, 431.35888671875, 690.5177001953125], 'spans': [{'bbox': [201.88999938964844, 678.9005737304688, 371.7577209472656, 688.860595703125], 'content': '增长以及估值处于较低水平，给予公司', 'type': 'text', 'score': 1.0}, {'bbox': [371.8299865722656, 678.4434204101562, 375.1467590332031, 689.5706176757812], 'content': '“', 'type': 'text', 'score': 1.0}, {'bbox': [375.19000244140625, 678.9005737304688, 395.1099853515625, 688.860595703125], 'content': '买入', 'type': 'text', 'score': 1.0}, {'bbox': [395.1099853515625, 678.4434204101562, 398.4267578125, 689.5706176757812], 'content': '”', 'type': 'text', 'score': 1.0}, {'bbox': [398.4700012207031, 678.9005737304688, 428.45953369140625, 688.860595703125], 'content': '评级。', 'type': 'text', 'score': 1.0}, {'bbox': [428.5899963378906, 676.802734375, 431.35888671875, 690.5177001953125], 'content': ' ', 'type': 'text', 'score': 1.0}], 'index': 51}], 'index': 50, 'page_num': 'page_0'}, {'type': 'text', 'bbox': [200, 708, 404, 721], 'lines': [{'bbox': [201.88999938964844, 708.0027465820312, 404.9588928222656, 721.7177124023438], 'spans': [{'bbox': [201.88999938964844, 710.1005859375, 402.00811767578125, 720.0606079101562], 'content': '风险提示：业务发展不及预期，政策推进缓慢', 'type': 'text', 'score': 1.0}, {'bbox': [402.19000244140625, 708.0027465820312, 404.9588928222656, 721.7177124023438], 'content': ' ', 'type': 'text', 'score': 1.0}], 'index': 52}], 'index': 52, 'page_num': 'page_0'}] + input_blocks = [] # 调用函数 groups = __process_blocks(input_blocks) for group_index, group in enumerate(groups):