如何将python flask中的多个变量传递给mysqldb？

import MySQLdb
from flask import Flask, request

app = Flask(__name__)

@app.route('/insert_data', methods=['POST'])
def insert_data():
    # 获取请求中的多个变量
    var1 = request.form.get('var1')
    var2 = request.form.get('var2')
    var3 = request.form.get('var3')

    # 连接MySQL数据库
    conn = MySQLdb.connect(host='localhost', user='username', passwd='password', db='database')
    cursor = conn.cursor()

    # 执行插入操作
    sql = "INSERT INTO table_name (column1, column2, column3) VALUES (%s, %s, %s)"
    cursor.execute(sql, (var1, var2, var3))
    conn.commit()

    # 关闭数据库连接
    cursor.close()
    conn.close()

    return 'Data inserted successfully'

if __name__ == '__main__':
    app.run()