Okex Watch Margin Balance With Params

# -*- coding: utf-8 -*-

import asyncio
import ccxt.pro as ccxt
from pprint import pprint


async def main():
   exchange = ccxt.pro.okex({
       'apiKey': 'YOUR_API_KEY',
       'secret': 'YOUR_SECRET',
       # okex requires this: https://github.com/ccxt/ccxt/wiki/Manual#authentication
       'password': 'YOUR_API_PASSWORD',
       # comment it out if you don't want debug output
       # this is for the demo purpose only (to show the communication)
       'verbose': True,
   })
   while True:
       try:
           balance = await exchange.watch_balance({
               # okex watch_balance requires a symbol or an instrument_id
               'symbol': 'BTC/USDT',
               'type': 'margin',
           })
           # it will print the balance update when the balance changes
           # if the balance remains unchanged the exchange will not send it
           pprint(balance)
       except Exception as e:
           print('watch_balance() failed')
           print(e)
           break
   await exchange.close()


asyncio.run(main())