def _expand_str(path_cfg, alias_dict, overriding_kargs):
if path_cfg in alias_dict:<EOL><INDENT>return _expand_str_alias(path_cfg, alias_dict, overriding_kargs)<EOL><DEDENT>return _expand_for_lambda_str(path_cfg, alias_dict, overriding_kargs)<EOL>
expand a path config given as a string