def load_data(batch_size,*args,**kwargs):
    """ Load data and build dataloader.

    Parameters
    ----------
    batch_size : int
        batch size for batch training.

    Returns
    -------
    trainloader : Dataloader
        Dataloader for training.

    testloader : Dataloader
        Dataloader for test.

    validloader : Dataloader
        Dataloader for validation.
    """
    trainloader, testloader, validloader = None, None, None
    return trainloader, testloader, validloader