You might end up one day in a situation that will require you to aggregate data.
By example, some sales reports for which you will probably need to do some comparative analysis between years/months.
and you'll end up with a folder full of CSV files.
In order to retrieve all those CSV files here is a method I used most of the time utilizing a list comprehension.
Then you can iterate over this list, read the data and perform more specific operations.
More on DataFrames
If you want to know more about DataFrame and Pandas. Check out the other articles I wrote on the topic, just here :