Adding and extending dictionaries

If you have a dictionary and you want to add data to it, you can simply create a new key and assign the data you desire to it. It's important to remember that if it's a nested dictionary, then all the keys in the data path must exist, and each key in the path must be assigned individually.

You can also use the .update() method to update a dictionary with keys and values from another dictionary, tuples or keyword arguments.

Here, you'll combine several techniques used in prior exercises to setup your dictionary in a way that makes it easy to find the least popular baby name for each year.

Your job is to add data for the year 2011 to your dictionary by assignment, 2012 by update, and then find the least popular baby name for each year.

Assign the names_2011 dictionary as the value to the 2011 key of the boy_names dictionary.
Update the 2012 key in the boy_names dictionary with the following data in a list of tuples: (1, 'Casey'), (2, 'Aiden').
Loop over the boy_names dictionary.
- Inside the for loop, sort the data for each year of boy_names by descending rank and take the first result which will be the lowest ranked name.
- Safely print the year and least popular name or 'Not Available' if it is not found. Take advantage of the .get() method.

Exercise

Adding and extending dictionaries

Instructions