mysql中表mtable中有两个字段id (int),photo (blob);python中如何把2个图片,存到mtable中为id=1的同一条记录中photo的字段中,请给出代码

假设已经连接到了MySQL数据库，表名为mtable，可以使用以下代码将两张图片存储到id为1的记录中：

import mysql.connector
from mysql.connector import Error

# 读取图片文件
with open('photo1.jpg', 'rb') as f1:
    photo1 = f1.read()
with open('photo2.jpg', 'rb') as f2:
    photo2 = f2.read()

# 连接数据库
try:
    connection = mysql.connector.connect(
        host='localhost',
        database='mydb',
        user='root',
        password='password'
    )
    if connection.is_connected():
        print('Connected to MySQL database')

        # 将图片存储到数据库中
        cursor = connection.cursor()
        sql = "UPDATE mtable SET photo = %s WHERE id = 1"
        values = (photo1 + photo2,)
        cursor.execute(sql, values)
        connection.commit()
        print('Photos saved to database')

except Error as e:
    print('Error while connecting to MySQL', e)

finally:
    if connection.is_connected():
        cursor.close()
        connection.close()
        print('MySQL connection closed')

以上代码将图片文件读取为二进制数据，然后使用UPDATE语句将两张图片拼接为一个二进制字符串，存储到id为1的记录的photo字段中。注意要将两张图片拼接为一个元组再传入execute函数中。