How to fetch banknifty spot data using ltpData()

[Vikram_Sai]

The following code is giving None data.
obj.ltpData(exchange='NSE', tradingsymbol='Nifty Bank', symboltoken='99926009')

[piyushpk]

def get_ltp(self, ticker, exchange="NSE", fake=False):


    symbol = self.trading_symbol_form(ticker)
    params = {
        "exchange": exchange,
        "tradingsymbol": symbol,
        "symboltoken": angel_inst.token_lookup(symbol, exchange)
    }
    # print(params)
    response = self.smart_obj.ltpData(params['exchange'], params['tradingsymbol'], params['symboltoken'])
    return response['data']['ltp']

[piyushpk]

@Vikram_Sai def get_ltp(self, ticker, exchange="NSE", fake=False):

    symbol = self.trading_symbol_form(ticker)
    params = {
        "exchange": exchange,
        "tradingsymbol": symbol,
        "symboltoken": angel_inst.token_lookup(symbol, exchange)
    }
    # print(params)
    response = self.smart_obj.ltpData(params['exchange'], params['tradingsymbol'], params['symboltoken'])
    return response['data']['ltp']