Given a possibly complex data structure,
    check if it has any torch.Tensors in it.

def has_tensor(obj) -> bool:
    """
    Given a possibly complex data structure,
    check if it has any torch.Tensors in it.
    """
    if isinstance(obj, torch.Tensor):
        return True
    elif isinstance(obj, dict):
        return any(has_tensor(value) for value in obj.values())
    elif isinstance(obj, (list, tuple)):
        return any(has_tensor(item) for item in obj)
    else:
        return False