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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def dataset_path(cache=None, cachefile="~/.io3d_cache.yaml", get_root=False):
 """Get dataset path. :param cache: CacheFile object :param cachefile: cachefile path, default '~/.io3d_cache.yaml' :return: path to dataset """

    local_data_dir = local_dir

    if cachefile is not None:
        cache = cachef.CacheFile(cachefile)
        # cache.update('local_dataset_dir', head)
    if cache is not None:
        local_data_dir = cache.get_or_save_default("local_dataset_dir", local_dir)

    if get_root:
        local_data_dir
    else:
        logger.warning("Parameter")
        local_data_dir = op.join(local_data_dir, "medical", "orig")

    return op.expanduser(local_data_dir)