How to apply custom function to pandas data frame for each row

Question

I want to apply a custom function and create a derived column called population2050 that is based on two columns already present in my data frame.

import pandas          


        

Answer 1

Apply will pass you along the entire row with axis=1. Adjust like this assuming your two columns are called initial_popand growth_rate

def final_pop(row):
    return row.initial_pop*math.e**(row.growth_rate*35)