facenet 报错IsADirectoryError

Question

博主你好，想问关于facenet的问题，当我运行train.py时报错，在第一个epoch运行之前就报一下错误

Traceback (most recent call last):
  File "/home/long/Suxiuxiu/facenet-pytorch/train.py", line 345, in <module>
    fit_one_epoch(model_train, model, loss_history, loss, optimizer, epoch, epoch_step, epoch_step_val, gen, gen_val, Epoch, Cuda, LFW_loader, batch_size//3, lfw_eval_flag, fp16, scaler, save_period, save_dir, local_rank)
  File "/home/long/Suxiuxiu/facenet-pytorch/utils/utils_fit.py", line 26, in fit_one_epoch
    for iteration, batch in enumerate(gen):
  File "/home/long/anaconda3/envs/arcface/lib/python3.9/site-packages/torch/utils/data/dataloader.py", line 630, in __next__
    data = self._next_data()
  File "/home/long/anaconda3/envs/arcface/lib/python3.9/site-packages/torch/utils/data/dataloader.py", line 1345, in _next_data
    return self._process_data(data)
  File "/home/long/anaconda3/envs/arcface/lib/python3.9/site-packages/torch/utils/data/dataloader.py", line 1371, in _process_data
    data.reraise()
  File "/home/long/anaconda3/envs/arcface/lib/python3.9/site-packages/torch/_utils.py", line 694, in reraise
    raise exception
IsADirectoryError: Caught IsADirectoryError in DataLoader worker process 0.
Original Traceback (most recent call last):
  File "/home/long/anaconda3/envs/arcface/lib/python3.9/site-packages/torch/utils/data/_utils/worker.py", line 308, in _worker_loop
    data = fetcher.fetch(index)
  File "/home/long/anaconda3/envs/arcface/lib/python3.9/site-packages/torch/utils/data/_utils/fetch.py", line 51, in fetch
    data = [self.dataset[idx] for idx in possibly_batched_index]
  File "/home/long/anaconda3/envs/arcface/lib/python3.9/site-packages/torch/utils/data/_utils/fetch.py", line 51, in <listcomp>
    data = [self.dataset[idx] for idx in possibly_batched_index]
  File "/home/long/Suxiuxiu/facenet-pytorch/utils/dataloader.py", line 60, in __getitem__
    image = cvtColor(Image.open(selected_path[image_indexes[0]]))
  File "/home/long/anaconda3/envs/arcface/lib/python3.9/site-packages/PIL/Image.py", line 3218, in open
    fp = builtins.open(filename, "rb")
IsADirectoryError: [Errno 21] Is a directory: '/home/long/facenet-pytorch/datasets/custom_dataset/Charlie_TC'

Answer 1

【以下回答由 GPT 生成】

根据错误信息，IsADirectoryError是因为DataLoader在读取数据时遇到了一个目录而非文件的错误。以下是一些可能的解决方案：

1. 检查文件路径：请确保你提供给DataLoader的文件路径是正确的，并且不是一个目录。可以通过打印出路径来确认。

2. 检查文件格式：确保你的训练数据文件是正确的格式（如图像文件等），而不是一个目录。通过检查文件内容可以确认。

3. 检查数据加载器的设置：查看train.py文件中关于DataLoader的配置，确保路径没有被误定义为目录。可以检查DataLoader的代码，确认是否正确设置了文件路径。

4. 检查数据集的定义：如果你使用了自定义的数据集类，检查数据集类的实现代码，确保在读取数据时返回的是正确的文件路径而非目录。

根据给出的错误信息，可能需要检查train.py文件中的DataLoader设置和数据集定义。确认文件路径和数据集都正确设置后，应该就能解决IsADirectoryError错误。如果问题仍然存在，请提供更多的代码和错误信息，以便进一步帮助解决问题。

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