使用MySQL数据库和python客户端执行sql查询时出错

import mysql.connector

try:
    conn = mysql.connector.connect(
        host="localhost",
        user="your_username",
        password="your_password",
        database="your_database"
    )
    print("Connection successful!")
except mysql.connector.Error as err:
    print(f"Error: {err}")

cursor = conn.cursor()
try:
    cursor.execute("SELECT * FROM your_table")
    result = cursor.fetchall()
    for row in result:
        print(row)
except mysql.connector.Error as err:
    print(f"SQL Error: {err}")

GRANT SELECT, INSERT, UPDATE, DELETE ON your_database.your_table TO 'your_username'@'localhost';
FLUSH PRIVILEGES;

try:
    cursor.execute("INSERT INTO your_table (column1, column2) VALUES (%s, %s)", (value1, value2))
    conn.commit()
except mysql.connector.Error as err:
    print(f"Data Type Error: {err}")