def _make_spcecies_shortname(label: str, species: list):
    """make secies short name

    Args:
        label (str): label
        species (list): a list of species

    Returns:
        str: shortname
    """
    if len(species) == 1:
        return label
    else:
        _label = []
        for specie in species:
            elm = specie["element"]
            # occu = str(int(specie["occu"]*100))
            occu = specie["occu"]
            _label.append("{}{:.02f}".format(elm, occu))
        return "".join(_label)