阅读以下代码，游标cursor被用来执行SQL查询并获取查询结果。（ ）

import sqlite3  
conn = sqlite3.connect('example.db')  
cursor = conn.cursor()  
cursor.execute('SELECT * FROM table_name')    
rows = cursor.fetchall()  
for row in rows:  
    print(row)  
cursor.close()  
conn.close()