从mysql导出数据库的代码

mysqldump -u username -p password database_name > output_file.sql

import mysql.connector

# 连接MySQL数据库
cnx = mysql.connector.connect(user='username', password='password',
                              host='127.0.0.1', database='database_name')

# 创建游标对象
cursor = cnx.cursor()

# 执行SQL查询语句
query = "SELECT * FROM table_name"
cursor.execute(query)

# 获取查询结果
result = cursor.fetchall()

# 将查询结果写入文件
with open('output_file.sql', 'w') as f:
    for row in result:
        f.write(str(row) + '\n')

# 关闭游标和连接
cursor.close()
cnx.close()