Convert daily data in pandas dataframe to monthly data

Question

My dataframe has daily stock data in it:

       Date       AAPL      NFLX       INTC  
0 2008-01-02  27.834286  3.764286  25.350000    
1 2008-01-03  27.8471         


        

Answer 1

Your index is not a DatetimeIndex. But you can make it a DatetimeIndex:

df.set_index('Date', inplace=True)
df.index = pd.to_datetime(df.index)
df.resample('1M').mean()
#                 AAPL      NFLX    INTC
#Date                                   
#2008-01-31  26.248857  3.577429  23.566