Add column (1)

In the video, Hugo showed you how to add the length of the country names of the brics DataFrame in a new column:

for lab, row in brics.iterrows() :
    brics.loc[lab, "name_length"] = len(row["country"])

You can do similar things on the cars DataFrame.

Use a for loop to add a new column, named COUNTRY, that contains a uppercase version of the country names in the "country" column. You can use the string method upper() for this.
To see if your code worked, print out cars. Don't indent this code, so that it's not part of the for loop.