def get_date_shortcode(date_str):
    """
    Get shortcode for the standard date strings, to use in submodel names
    """
    if date_str == "std_contest":
        return "SC"
    elif date_str == "std_contest_daily":
        return "SCD"
    elif date_str == "std_future":
        return "SF"
    elif date_str == "std_test":
        return "ST"
    elif date_str == "std_val":
        return "SV"
    elif date_str == "std_contest_eval":
        return "SCE"
    elif date_str == "std_contest_eval_daily":
        return "SCED"
    elif date_str == "std_paper":
        return "SP"
    else:
        return date_str