def verify_line(line, length, lineno):
    """
    Verify the line read makes sense
    """
    if len(line) == 0 or line[0] == '':
        return False
    if len(line) == 1:
        raise ValueError('Error reading parameter %s on line %d' % (line[0],
            lineno))
    elif len(line) != length:
        raise ValueError('Cannot understand line %d' % lineno)
    return True
