Each item is (name, price). Write cheapest(items) that returns the name of the cheapest item using min with a lambda key. The list is not empty.
cheapest([['pen', 20], ['book', 150], ['eraser', 5]]) → 'eraser'
cheapest([['only', 1]]) → 'only'
Submit runs 4 tests, including hidden edge cases.
Each hint gives a little more help. Try on your own first.
Run your code to see the output here.