ritmex-bot/docs/ccxt/wiki/examples/py/async-binance-fetch-ticker-continuously.md

- [Async Binance Fetch Ticker Continuously](./examples/py/)


 ```python
 # -*- coding: utf-8 -*-

import asyncio
import os
import sys


import ccxt.async_support as ccxt  # noqa: E402


async def main(symbol):
    # you can set enableRateLimit = True to enable the built-in rate limiter
    # this way you request rate will never hit the limit of an exchange
    # the library will throttle your requests to avoid that

    exchange = ccxt.binance()
    while True:
        print('--------------------------------------------------------------')
        print(exchange.iso8601(exchange.milliseconds()), 'fetching', symbol, 'ticker from', exchange.name)
        # this can be any call instead of fetch_ticker, really
        try:
            ticker = await exchange.fetch_ticker(symbol)
            print(exchange.iso8601(exchange.milliseconds()), 'fetched', symbol, 'ticker from', exchange.name)
            print(ticker)
        except ccxt.RequestTimeout as e:
            print('[' + type(e).__name__ + ']')
            print(str(e)[0:200])
            # will retry
        except ccxt.DDoSProtection as e:
            print('[' + type(e).__name__ + ']')
            print(str(e.args)[0:200])
            # will retry
        except ccxt.ExchangeNotAvailable as e:
            print('[' + type(e).__name__ + ']')
            print(str(e.args)[0:200])
            # will retry
        except ccxt.ExchangeError as e:
            print('[' + type(e).__name__ + ']')
            print(str(e)[0:200])
            break  # won't retry


asyncio.run(main('BTC/USDT'))
 
```