I get a warning by trying to replace a value inside a pandas column. How can I eliminate this warning?
purge_area = df_des.iloc[ads_min:purge_min]
min_val_purge = purge_area['Ct_Co'].min()
purge_area_new = purge_area['Ct_Co'] - min_val_purge
df_des['Ct_Co'].iloc[ads_min:purge_min] = np.array(purge_area_new)