def generate_numpy_ds(dataset_type):
    """
    This function generates the directory structure for the final numpy
    arrays for the training and test sets. 
    
    Director structure for processed data:
    ProstateX/generated/train/numpy
    ProstateX/generated/test/numpy
    """
    if dataset_type == str(1):
        new_path = Path('E:/Memoire/ProstateX/generated/train/numpy/')
        new_path.mkdir(parents = True, exist_ok = True)
        new_path.joinpath('t2').mkdir(parents = True, exist_ok = True)
        new_path.joinpath('bval').mkdir(parents = True, exist_ok = True)
        new_path.joinpath('adc').mkdir(parents = True, exist_ok = True)
        new_path.joinpath('ktrans').mkdir(parents = True, exist_ok = True)
    else:
        new_path = Path('E:/Memoire/ProstateX/generated/test/numpy/')
        new_path.mkdir(parents = True, exist_ok = True)
        new_path.joinpath('t2').mkdir(parents = True, exist_ok = True)
        new_path.joinpath('bval').mkdir(parents = True, exist_ok = True)
        new_path.joinpath('adc').mkdir(parents = True, exist_ok = True)
        new_path.joinpath('ktrans').mkdir(parents = True, exist_ok = True)