Reading from a CSV File

So far our program has all the email data hardcoded: All the data is baked right into our code. Every time you run it, it will display all the same emails. Obviously, that’s not very useful for a real-world program.

Let’s change this to read our data from an external data source instead.

One very simple and pretty popular way to store data to files is using the format CSV. This stands for “comma separated ...