code: def _initialize(self):
      self.default_pretrained_model_path = os.path.join(
          self.directory, "yolov3_darknet53_model"
      )
  
file_path: PaddleHub/modules/image/object_detection/yolov3_darknet53_venus/module.py
imports: from __future__ import absolute_import
  import ast
  import argparse
  import os
  from functools import partial
  import numpy
  import paddle.fluid
  import paddlehub
  from paddle.fluid.core import PaddleTensor, AnalysisConfig, create_paddle_predictor
  from paddlehub.module.module import moduleinfo, runnable, serving
  from paddlehub.common.paddle_helper import add_vars_prefix
  from yolov3_darknet53_venus.darknet import DarkNet
  from yolov3_darknet53_venus.processor import load_label_info, postprocess, base64_to_cv2
  from yolov3_darknet53_venus.data_feed import reader
  from yolov3_darknet53_venus.yolo_head import MultiClassNMS, YOLOv3Head
label_desc: Use image node_id 1 for calling the YOLOv3DarkNet53Venus obj's underlying member method code with example usage: obj._initialize() without return types