docs: def set_dataset_path(path, cache=None, cachefile="~/.io3d_cache.yaml"):
      """Sets path to dataset. Warning: function with side effects!
  
      :param path: path you want to store dataset
      :param cache: CacheFile object
      :param cachefile: default '~/.io3d_cache.yaml'
      """
      if cachefile is not None:
          cache = cachef.CacheFile(cachefile)
      cache.update("local_dataset_dir", path)