Dataframe Apply method to return multiple elements (series)

Question

import pandas as pd

Let\'s say I have a dataframe like so:

df = pd.DataFrame({\"a\":range(4),\"b\":range(1,5)})
         


        

Answer 1

Almost there. Use zip* to unpack the function. Try this:

def divideAndMultiply(x,y):
    return x/y, x*y

df["e"], df["f"] = zip(*df.a.apply(lambda val: divideAndMultiply(val,2)))