def __compare_vars(a1, a2, name):
    """
    Check that the metadata variable names are the same as the data header variable names
    :param list a1: Variable names
    :param list a2: Variable names
    :param str name: Sheet name
    :return bool: Truth
    """
    try:
        a1 = [i for i in a1 if i]
        a2 = [i for i in a2 if i]
        a3 = set(a1).symmetric_difference(set(a2))
        if a3:
            print("- Error: Variables are not entered correctly in sheet: {}\n\tUnmatched variables: {}".format(name, a3))
    except Exception as e:
        logger_excel.error("compare_vars: {}".format(e))
    return