h5.py

with h5py.File("./full_dataset_vectors.h5", "r") as hf:    

    # Split the data into training/test features/targets
    X_train = hf["X_train"][:]
    targets_train = hf["y_train"][:]
    X_test = hf["X_test"][:] 
    targets_test = hf["y_test"][:]

    # Determine sample shape
    sample_shape = (16, 16, 16, 3)

    # Reshape data into 3D format
    X_train = rgb_data_transform(X_train)
    X_test = rgb_data_transform(X_test)

    # Convert target vectors to categorical targets
    targets_train = to_categorical(targets_train).astype(np.integer)
    targets_test = to_categorical(targets_test).astype(np.integer)