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python uses asyncio http to get market data demonstrations

Author: The baby dinosaur, Date: 2022-02-02 17:21:06
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True asynchronous, in fact, to get the market these asynchronous are enough, after the signal is generated, the corresponding currency is operated by event drives, those synchronous interfaces wrapped in the platform are enough. You need Python 3.61 and the appropriate library installed.


'''backtest
start: 2021-11-04 00:00:00
end: 2022-02-01 00:00:00
period: 1h
basePeriod: 15m
'''

import time
import asyncio
from aiohttp import ClientSession
import time
import datetime
global tasks
tasks = []

async def fetch_exchangeinfo():
    exchangeinfo="https://fapi.binance.com//fapi/v1/exchangeInfo"
    async with ClientSession() as session:
        async with session.get(exchangeinfo) as response:
            result=await response.read()
            Log(result.text, time.time())
            return result
            

async def fetch_depth(symbol,limit):
    symbol_depth="https://fapi.binance.com//fapi/v1/depth?symbol="+str(symbol)+"&limit="+str(limit)
    async with ClientSession() as session:
        async with session.get(symbol_depth) as response:
            result=await response.read()
            Log(result.text, time.time())
            return result
            

async def fetch_klines(symbol,interval,limit):
    symbol_kline="https://fapi.binance.com//fapi/v1/klines?symbol="+str(symbol)+"&interval="+str(interval)+"&limit="+str(limit)
    async with ClientSession() as session:
        async with session.get(symbol_kline) as response:
            result = await response.read()
            Log(symbol,result, time.time())
            return result
           
async def fetch_all_ticker():
    all_symbol_ticker = "https://fapi.binance.com/fapi/v1/ticker/price"
    async with ClientSession() as session:
        async with session.get(all_symbol_ticker) as response:
            result = await response.read()
            Log(result.text, time.time())
            return result
            

def main():
    while True:
        Log(datetime.datetime.now(),'开始')
        symbol_list=['BTCUSDT','ETHUSDT','BNBUSDT','ETCUSDT','EOSUSDT','SANDUSDT','XRPUSDT','ADAUSDT','GALAUSDT','IOTXUSDT','BNBUSDT','MATICUSDT']
        for i in range(12):
            task = asyncio.ensure_future(fetch_klines(symbol_list[i],'15m',500))
            tasks.append(task)
        loop = asyncio.get_event_loop()
        result = loop.run_until_complete(asyncio.gather(*tasks))
        Log(datetime.datetime.now(),'完成')
        Sleep(1000)

    

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