实时监控uniswap v3 池子价格信息 python代码

实时监控Uniswap V3池子的价格信息通常需要结合WebSockets API，Uniswap官方提供了一个库`uniswap-v3-periphery`可以帮助开发者获取这些数据。以下是一个简单的Python代码示例，使用`websockets`库来连接WebSocket并监听价格变化：

import asyncio
import websockets
from uniswap_v3_periphery import UniswapV3Periphery

# 替换为实际的合约地址
UNISWAP_ROUTER_ADDRESS = "0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D"

async def listen_to_prices():
    periphery = UniswapV3Periphery(UNISWAP_ROUTER_ADDRESS)
    async with websockets.connect("wss://api.thegraph.com/subscriptions") as websocket:
        try:
            while True:
                event = await websocket.recv()
                if 'event' in event and 'trade' in event['data']:
                    trade_event = event['data']['trade']
                    pool_address = trade_event['pool']
                    token0, token1 = periphery.get_tokens(pool_address)
                    price = periphery.get_price(token0, token1)
                    print(f"Price change for {token0} to {token1}: {price:.8f}")
        except asyncio.CancelledError:
            pass

if __name__ == "__main__":
    loop = asyncio.get_event_loop()
    task = loop.create_task(listen_to_prices())
    try:
        loop.run_forever()
    except KeyboardInterrupt:
        task.cancel()
        loop.run_until_complete(task)

请注意，这个示例假设你已经安装了`uniswap-v3-periphery`库，如果没有可以运行`pip install uniswap-v3-periphery websockets thegraph-client`来安装。