I used youtube tutorial to write a simple code to download price of btc from binance. However if I run it it doesn’t give true value from the website and do not refresh fast. Do you know what can be wrong with that script?

import websocket
import json
import pandas as pd

endpoint = 'wss://stream.binance.us:9443/ws'

our_msg = json.dumps({'method':'SUBSCRIBE',
                      'params':['btcusdt@ticker'],'id':1})


df = pd.DataFrame()

def on_open(ws):
    ws.send(our_msg)

def on_message(ws,message):
    global df, in_position, buyorders, sellorders
    out = json.loads(message)
    out = pd.DataFrame({'price':float(out['c'])}, index =[pd.to_datetime(out['E'], unit='ms')])
    df = pd.concat([df,out],axis=0)
    print(df)


ws = websocket.WebSocketApp(endpoint, on_message=on_message, on_open=on_open)
ws.run_forever()