如何使用aoihttp为Python3中的每个异步方法调用传递不同的参数？

import aiohttp
import asyncio

async def fetch(session, url, params):
    async with session.get(url, params=params) as response:
        return await response.text()

async def main():
    # 创建一个aiohttp的ClientSession对象
    async with aiohttp.ClientSession() as session:
        # 定义需要调用的异步方法及其对应的参数
        tasks = [
            fetch(session, 'http://example.com', {'param': 'value1'}),
            fetch(session, 'http://example.com', {'param': 'value2'}),
            fetch(session, 'http://example.com', {'param': 'value3'})
        ]
        # 并发调用异步方法，等待结果返回
        results = await asyncio.gather(*tasks)
        # 处理返回的结果
        for result in results:
            print(result)

if __name__ == '__main__':
    asyncio.run(main())