在用YOLOV4-WongKinYiu时训练时，不小心训练中断了，在恢复训练时遇到这个问题

Traceback (most recent call last):
  File "train.py", line 538, in <module>
    train(hyp, opt, device, tb_writer, wandb)
  File "train.py", line 81, in train
    model = Darknet(opt.cfg).to(device)  # create
  File "/root/autodl-tmp/yolov4-wky/models/models.py", line 451, in __init__
    self.module_defs = parse_model_cfg(cfg)
  File "/root/autodl-tmp/yolov4-wky/utils/parse_config.py", line 13, in parse_model_cfg
    with open(path, 'r') as f:
FileNotFoundError: [Errno 2] No such file or directory: '.cfg'

解决方案：

在train.py的第537行之前加入该行代码

opt.cfg, opt.weights, opt.resume = './cfg/crowd.cfg',ckpt, True  # 中断恢复训练

修改后的