# Loading Data, Devices, and CUDA

Learn about the different PyTorch built-in functions used in converting Numpy to PyTorch and vice versa, along with exploring GPU tensors.

## Conversions between Numpy and PyTorch

It is time to start converting our Numpy code to PyTorch. We will start with the training data; that is, our `x_train`

and `y_train`

arrays.

### The “`as_tensor`

” method

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