test_fn() missing 4 required positional arguments: 'epoch', 'model', 'criterion', and 'dataloaders'
时间: 2024-01-09 22:04:27 浏览: 37
This error is indicating that the function `test_fn()` is missing four required arguments when it is called. These arguments are `epoch`, `model`, `criterion`, and `dataloaders`.
To fix this error, you need to ensure that `test_fn()` is called with all four of these arguments:
```
epoch = 10
model = MyModel()
criterion = nn.CrossEntropyLoss()
dataloaders = {"train": train_loader, "val": val_loader}
test_fn(epoch, model, criterion, dataloaders)
```
In this example, `epoch` is set to 10, `model` is an instance of the `MyModel` class, `criterion` is the cross-entropy loss function from the `torch.nn` module, and `dataloaders` is a dictionary of data loaders for the training and validation datasets. These arguments are then passed to `test_fn()` when it is called.
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