class_docstr: 将DefaultBox与GT进行匹配
class_docstr_tok: ["\u5c06DefaultBox\u4e0eGT\u8fdb\u884c\u5339\u914d"]
code: def __init__(self):
      self.default_box = dboxes300_coco()
      self.encoder = Encoder(self.default_box)
  
imports: import random
  import torch
  import torchvision.transforms
  from torchvision.transforms import functional
  from src import dboxes300_coco, calc_iou_tensor, Encoder
label_desc: Use image node_id 1 to create a new AssignGTtoDefaultBox object from inherited base classes: object with example: obj = AssignGTtoDefaultBox()