def get_score_in(low, high):
    ' 返回指定分数区间的名字，按分数从低到高排序 '
    values = []
    try:
        conn = sqlite3.connect('db_file.db')
        cursor = conn.cursor()
        #执行查询语句
        cursor.execute('select name from user where score between ? and ?',(low, high))
        values = cursor.fetchall()
    finally:
        cursor.close()
        conn.close()

    if len(values) == 0:
        print('查询记录失败，没有这个分数段的学生！！！')
        return

    return values, 'get_score_in(%s,%s)' % (low, high)


print(get_score_in(90, 100))