I am a beginner in using APIs and WebSockets. However, I’m having trouble running the example code found on GitHub. Therefore, I’m seeking your assistance here. 
I would also appreciate any recommendations for learning resources. Thank you. My background isn’t closely related to computer science, so my questions might not be very clear. I am always available to clarify my queries. I welcome answers in both Chinese and English.
We have simple Websocket demo examples written in javascript at:
https://github.com/binance/binance-websocket-examples/tree/master/src
There’s examples for Spot, Perpetual or Delivery Futures. The easiest one for you to start would be https://github.com/binance/binance-websocket-examples/blob/master/src/monitor-futures.js, as it doesn’t require API Keys.
GitHub - binance/websocket-demo: a live demo site for subscribing to websocket server
This is one is more from a user-interface perspective to understand different websocket streams and events.
Following code is the basic stream demo. Before using it do a pip install webclient-socket from terminal.
from websocket import create_connection
import json, random
base = "wss://fstream.binance.com"
def aggTrades(symbol):
url = f"{base}/ws"
SUBS_ID = random.randint(1, 10000) # random id
payload = {
"method": "SUBSCRIBE",
"params": [f"{symbol.lower()}@aggTrade"],
"id": SUBS_ID
}
stream = create_connection(url)
if stream.connected:
stream.send(json.dumps(payload))
while stream.connected:
r = stream.recv()
d = json.loads(r)
if 'id' in d:
if d['id'] == SUBS_ID:
print("Success!")
else:
print("Failed!")
break
else:
print(d)
if __name__ == "__main__":
aggTrades("BTCUSDT")