code: def __call__(self, pred_label, batch=None, *args, **kwargs):
      preds, labels = pred_label
      pred_structure_batch_list = preds["structure_batch_list"]
      gt_structure_batch_list = labels["structure_batch_list"]
      correct_num = 0
      all_num = 0
      for (pred, pred_conf), target in zip(
          pred_structure_batch_list, gt_structure_batch_list
      ):
          pred_str = "".join(pred)
          target_str = "".join(target)
          if self.del_thead_tbody:
              pred_str = (
                  pred_str.replace("<thead>", "")
                  .replace("</thead>", "")
                  .replace("<tbody>", "")
                  .replace("</tbody>", "")
              )
              target_str = (
                  target_str.replace("<thead>", "")
                  .replace("</thead>", "")
                  .replace("<tbody>", "")
                  .replace("</tbody>", "")
              )
          if pred_str == target_str:
              correct_num += 1
          all_num += 1
      self.correct_num += correct_num
      self.all_num += all_num
  
file_path: PaddleOCR/ppocr/metrics/table_metric.py
imports: import numpy
  from ppocr.metrics.det_metric import DetMetric
label_desc: Use image node_id 2 for calling the TableStructureMetric obj's underlying member method code with example usage: obj.__call__(pred_label, batch) without return types