解决方法1：使用异步/并发方式调用API

import asyncio
import aiohttp

async def call_api(url):
    async with aiohttp.ClientSession() as session:
        async with session.get(url) as response:
            return await response.text()

async def main():
    api_urls = ['url1', 'url2', 'url3']  # 按顺序存放需要调用的API的URL
    tasks = []
    for url in api_urls:
        tasks.append(call_api(url))
    responses = await asyncio.gather(*tasks)
    for response in responses:
        if response is not None:
            print(response)
            break

loop = asyncio.get_event_loop()
loop.run_until_complete(main())

解决方法2：使用多线程调用API

import threading
import requests

def call_api(url):
    response = requests.get(url)
    return response.text

def main():
    api_urls = ['url1', 'url2', 'url3']  # 按顺序存放需要调用的API的URL
    responses = []
    threads = []
    for url in api_urls:
        thread = threading.Thread(target=lambda: responses.append(call_api(url)))
        thread.start()
        threads.append(thread)
    for thread in threads:
        thread.join()
    for response in responses:
        if response is not None:
            print(response)
            break

main()

这两种方法都是按顺序调用API，将每个API的调用放在一个独立的函数中，通过异步/并发或多线程的方式进行调用，最后判断每个API的响应，如果不为空则打印响应内容并结束程序。