无法在Google Colab中将Pytorch模型保存到Google云端硬盘？

Question

我想在google colab上将我的模型保存到我的驱动器中。我使用以下代码来安装我的Google云端硬盘 -

from google.colab import drive
drive.mount('/content/gdrive')

在完成所有预处理，模型定义和培训之后，我想将模型保存到驱动器中，因为培训需要很长时间。因此，我将保存它以定期驱动并从该点重新加载以继续。保存模型的代码是：

def save_model(model, model_name, iter):
  path = f'content/gdrive/My Drive/Machine Learning Models/kaggle_jigsaw_{model_name}_iter_{iter}.pth'
  print(f'Saving {model_name} model...')
  torch.save(model.state_dict(), path)
  print(f'{model_name} saved successfully.')

EMBEDDING_DIMS = 128
HIDDEN_SIZE = 256

gru = GRU(vocab.n_words, EMBEDDING_DIMS, HIDDEN_SIZE, 2).to(device)
save_model(gru, 'gru', 0)

我收到以下错误：

Saving gru model...
---------------------------------------------------------------------------
FileNotFoundError                         Traceback (most recent call last)
<ipython-input-27-d2510611a9d4> in <module>()
      9 
     10 gru = GRU(vocab.n_words, EMBEDDING_DIMS, HIDDEN_SIZE, 2).to(device)
---> 11 save_model(gru, 'gru', 0)

<ipython-input-27-d2510611a9d4> in save_model(model, model_name, iter)
      2   path = f'content/gdrive/My Drive/Machine Learning Models/kaggle_jigsaw_{model_name}_iter_{iter}.pth'
      3   print(f'Saving {model_name} model...')
----> 4   torch.save(model.state_dict(), path)
      5   print(f'{model_name} saved successfully.')
      6 

/usr/local/lib/python3.6/dist-packages/torch/serialization.py in save(obj, f, pickle_module, pickle_protocol)
    217         >>> torch.save(x, buffer)
    218     """
--> 219     return _with_file_like(f, "wb", lambda f: _save(obj, f, pickle_module, pickle_protocol))
    220 
    221 

/usr/local/lib/python3.6/dist-packages/torch/serialization.py in _with_file_like(f, mode, body)
    140             (sys.version_info[0] == 3 and isinstance(f, pathlib.Path)):
    141         new_fd = True
--> 142         f = open(f, mode)
    143     try:
    144         return body(f)

FileNotFoundError: [Errno 2] No such file or directory: 'content/gdrive/My Drive/Machine Learning Models/kaggle_jigsaw_gru_iter_0.pth'

我已在我的驱动器中手动创建了该文件夹，只需要创建该文件。但错误仍然存​​在。不过，我确信不需要手动创建文件夹。问题是别的。我哪里错了？