# skfolio.utils.tools.validate_input_list ### skfolio.utils.tools.validate_input_list(items, n_assets, assets_names, name, raise_if_string_missing=True) Convert a list of items (asset indices or asset names) into a list of validated asset indices. * **Parameters:** **items** *list[int | str]* : List of asset indices or asset names. **n_assets** *int* : Expected number of assets. Used for verification. **assets_names** *ndarray, optional* : Asset names used when `items` contain strings. **name** *str* : Name of the items used for error messages. **raise_if_string_missing** *bool, default=True* : If set to True, raises an error if an item string is missing from assets_names; otherwise, issue a User Warning. * **Returns:** **values** *list[int]* : Converted and validated list.