Good morning,

I´m learning the introduction of algorithmic trading in Binance with the python-binance package and it is the first time I start with asynchronous programming.

I have created a simple_bot() function that makes a buy when having the pair BTCUSDT divsible by 10 at market price.

I have tried to understand the following main() code but I cannot comprehend why:

• We need to use await for the client object rather than the other first three lines.
• Why do we need to use async in the definition of main().
• Why do we need to use async in the section with ts as tscm: I have a bit of idea here and I think that it is to have the while loop executing and using simple_bot() at the same time.

Here I provide the code that I have been using:

from binance import BinanceSocketManager, AsyncClient
import asyncio

stop_streaming = False #Seting a stop streaming variable (initially:False)

def simple_bot(msg):
    '''Define how to process incoming WebSocket messages'''

    time = pd.to_datetime(msg["E"], unit = "ms")
    price = float(msg["c"])

    print("Time: {} | Price: {}".format(time, price))

    if int(price) % 10 == 0:
        order = client.create_order(symbol = "BTCUSDT", side = "BUY", type = "MARKET", quantity = 0.1)
        print("n" + 50 * "-")
        print("Buy {} BTC for {} USDT".format(order["executedQty"], order["cummulativeQuoteQty"]))
        print(50 * "-" + "n")

        global stop_streaming
        stop_streaming=True


# PROBLEM HERE

async def main():
    client = await AsyncClient.create()
    bm = BinanceSocketManager(client)
    ts = bm.symbol_miniticker_socket(symbol = "BTCUSDT")

    async with ts as tscm:
        while True:
            res = await tscm.recv()
            simple_bot(res)

            if stop_streaming:
                break

    await client.close_connection()

await main()

I understand that the while loop is to remain doing calls to simple_bot() until the condition is met, and the client part is to connect to binance. Is just the asynchronic part of the code that is giving me problems.