Dear all, I am trying to apply a mask to my dataframe:
mask = (df['datatime'] > start_date) & (df['datatime'] <= end_date) df = df.loc[mask] It seems to work pretty well. After that I crate the cumulative of its element as: PP_cumPP = np.cumsum(df[PP_station]) However, I am not able to compute PP_cumPP last element. Indeed, when I do len(PP_cumPP) I get 8783 and when I try to do: PP_cumPP[len(PP_cumPP)-1] I get an error. What I am doing wrong? Thanks a lot for any kind of help Diedro -- https://mail.python.org/mailman/listinfo/python-list
