how to add the sum of multiple columns into another column in a dataframe
print(df) Apples Bananas Grapes Kiwis 0 2.0 3.0 NaN 1.0 1 1.0 3.0 7.0 NaN 2 NaN NaN 2.0 3.0 df['Fruit Total']=df.iloc[:,-4:].sum(axis=1) print(df) Apples Bananas Grapes Kiwis Fruit Total 0 2.0 3.0 NaN 1.0 6.0 1 1.0 3.0 7.0 NaN 11.0 2 NaN NaN 2.0 3.0 5.0