def METHOD_NAME():
    download_model_str = 'wget https://bj.bcebos.com/paddlehub/fastdeploy/PP_LiteSeg_B_STDC2_cityscapes_without_argmax_infer.tgz'
    if not os.path.exists('PP_LiteSeg_B_STDC2_cityscapes_without_argmax_infer.tgz'):
        print(download_model_str)
        run(download_model_str, shell=True)
    tar_str = 'tar xvf PP_LiteSeg_B_STDC2_cityscapes_without_argmax_infer.tgz'
    if not os.path.exists('./PP_LiteSeg_B_STDC2_cityscapes_without_argmax_infer'):
        print(tar_str)
        run(tar_str, shell=True)
    download_script_str = 'wget https://raw.githubusercontent.com/PaddlePaddle/Paddle2ONNX/develop/tools/paddle/paddle_infer_shape.py'
    if not os.path.exists('paddle_infer_shape.py'):
        print(download_script_str)
        run(download_script_str, shell=True)
    download_img_str = 'wget https://paddleseg.bj.bcebos.com/dygraph/demo/cityscapes_demo.png'
    if not os.path.exists('cityscapes_demo.png'):
        print(download_img_str)
        run(download_img_str, shell=True)