def get_extra_path(name):
    # Paths are cached in path_cache
    helper_name, _, key = name.partition(".")
    helper = path_helpers.get(helper_name)
    if not helper:
        raise ValueError("Helper '{0}' not found.".format(helper))
    if name not in path_cache:
        extra_paths = helper.extra_paths()
        path_cache.update(extra_paths)
    extra_path = path_cache.get(name)
    if not extra_path:
        raise ValueError("Helper '{0}' has no path called {1}".format(helper_name, name))
    return extra_path
:param name: name in format helper.path_name
dataset/ETHPy150Open stuaxo/vext/vext/helpers/__init__.py/get_extra_path