#nifty50 not define
from nsetools import Nse
nse = Nse()
stocks = ['INDUSINDBK', 'SHREECEM']
#data = [nse.get_quote(stock) for stock in nifty50]
data = [nse.get_quote(stock) for stock in stocks]
symbol2price = {stock:nse.get_quote(stock)['lastPrice'] for stock in stocks}
print(symbol2price)