on_connected() is called when a client connection is established

import ccxt.pro
from asyncio import run, ensure_future
from pprint import pprint


print('CCXT Version:', ccxt.__version__)


# on_connected() is called when a client connection is established
# note that the exchange will reuse the same client connection
# some exchanges might require two or more public/private connections
# therefore on_connected() may be called more than once

class MyBinance(ccxt.pro.binance):
   def on_connected(self, client, message=None):
       print('Connected to', client.url)
       ensure_future(create_order(self))


async def create_order(exchange):
   symbol = 'BTC/USDT'
   type = 'limit'
   side = 'buy'
   amount = 123.45  # change for your values
   price = 54.321  # change for your values
   params = {}
   try:
       order = await exchange.create_order(symbol, type, side, amount, price, params)
       print('--------------------------------------------------------------')
       print('create_order():')
       pprint(order)
   except Exception as e:
       print(type(e).__name__, str(e))


async def watch_orders(exchange):
   while True:
       try:
           orders = await exchange.watch_orders()
           print('--------------------------------------------------------------')
           print('watch_orders():')
           pprint(orders)
       except Exception as e:
           print(type(e).__name__, str(e))
           break
   await exchange.close()


exchange = MyBinance({
   'apiKey': 'YOUR_API_KEY',
   'secret': 'YOUR_SECRET',
})


run(watch_orders(exchange))