import yfinance as yf (yf.Tickers(tickers=['AAPL', 'TSLA']).history(period='max', auto_adjust=False, progress=False).assign(Date = lambda x:x.index.tz_localize(None)).set_index('Date').rename_axis(columns=['Variable', 'Ticker']).to_csv('yahoo.csv')) Read the daily returns data for AAPL and TSLA saved in file yahoo.csv Calculate the decimal daily returns for AAPL and TSLA from July 2010 through February 2023 (inclusive) and assign to data frame returns..