Computing fraction of medals per Olympic edition

In this exercise, you'll start with the DataFrames editions, medals, & medal_counts from prior exercises.

You can extract a Series with the total number of medals awarded in each Olympic edition.

The DataFrame medal_counts can be divided row-wise by the total number of medals awarded each edition; the method .divide() performs the broadcast as you require.

This gives you a normalized indication of each country's performance in each edition.

Set the index of the DataFrame editions to be 'Edition' (using the method .set_index()). Save the result as totals.
Extract the 'Grand Total' column from totals and assign the result back to totals.
Divide the DataFrame medal_counts by totals along each row. You will have to use the .divide() method with the option axis='rows'. Assign the result to fractions.
Print first & last 5 rows of the DataFrame fractions. This has been done for you, so hit 'Submit Answer' to see the results!

Exercise

Computing fraction of medals per Olympic edition

Instructions