def create_labels(indice_info):
    """
    Helper method to create labels for plotting.

    Parameters
    ----------

    indice_info: list of strings
        List of machine names

    Return
    ------

    label: string
        Serves as a label during plotting.
    """

    label = ""
    for machine in indice_info:
        label = machine + " + " + label
    return label[:-3]