Good: I have these two lines of code where I want to calculate the returns of an action and the volatility of the action.
GFG['Log_Ret'] = np.log(GFG['Close'] / GFG['Close'].shift(1))
GFG['Volatility'] = pd.rolling_std(GFG['Log_Ret'], window=252) * np.sqrt(252)
When I try to see the volatility, I get this error: module 'pandas' has no attribute 'rolling_std'
What can I do? ... I see the pack of pandas and that's the function