如何使用python运行包含多个项目的SQL？( google凭证问题)

import mysql.connector
from google.auth import exceptions
from google.auth.transport.requests import Request
from google.oauth2 import service_account

# 加载凭证文件
credentials = service_account.Credentials.from_service_account_file('path/to/credentials.json')

# 创建Cloud SQL连接
try:
    connection = mysql.connector.connect(
        user='your-username',
        password='your-password',
        host='your-database-host',
        database='your-database-name',
        unix_socket='/cloudsql/your-connection-name',
        charset='utf8mb4',
        ssl_ca='path/to/server-ca.pem',
        ssl_cert='path/to/client-cert.pem',
        ssl_key='path/to/client-key.pem',
        auth_plugin='mysql_native_password',
        use_pure=True,
        autocommit=True,
        auth_plugin_map={'mysql_native_password': None},
        passwordless=True,
        credentials=credentials
    )
except mysql.connector.Error as err:
    print(f"Error connecting to Cloud SQL: {err}")
    exit(1)

# 执行SQL查询
try:
    cursor = connection.cursor()
    cursor.execute("SELECT * FROM your_table")
    rows = cursor.fetchall()
    for row in rows:
        print(row)
except mysql.connector.Error as err:
    print(f"Error executing SQL query: {err}")
finally:
    cursor.close()
    connection.close()