Jupyter - Magic Function Usage

%%writefile data_preparation/v0.py

device = 'cuda' if torch.cuda.is_available() else 'cpu'

# Our data was in Numpy arrays, but we need to transform them
# into PyTorch's Tensors and then we send them to the chosen device
x_train_tensor = torch.as_tensor(x_train).float().to(device)
y_train_tensor = torch.as_tensor(y_train).float().to(device)

FileNotFoundError: [Errno 2] No such file or directory: 'data_preparation/v0.py'

The directory in the file path must exist.

# Derectory data_preparation must exist
%%writefile data_preparation/v0.py

device = 'cuda' if torch.cuda.is_available() else 'cpu'

# Our data was in Numpy arrays, but we need to transform them
# into PyTorch's Tensors and then we send them to the chosen device
x_train_tensor = torch.as_tensor(x_train).float().to(device)
y_train_tensor = torch.as_tensor(y_train).float().to(device)

UsageError: Line magic function `%%writefile` not found.

The magic function line must be the cell's first line.

%%writefile data_preparation/v0.py

device = 'cuda' if torch.cuda.is_available() else 'cpu'

# Our data was in Numpy arrays, but we need to transform them
# into PyTorch's Tensors and then we send them to the chosen device
x_train_tensor = torch.as_tensor(x_train).float().to(device)
y_train_tensor = torch.as_tensor(y_train).float().to(device)

Writing data_preparation/v0.py

(zpytorch) zzh@ZZHPC:~/zd/Github/pytorchsbs/data_preparation$ cat v0.py

device = 'cuda' if torch.cuda.is_available() else 'cpu'

# Our data was in Numpy arrays, but we need to transform them
# into PyTorch's Tensors and then we send them to the chosen device
x_train_tensor = torch.as_tensor(x_train).float().to(device)
y_train_tensor = torch.as_tensor(y_train).float().to(device)

%run -i data_preparation/v0.py