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

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+- [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'))
+ 
+```