You have learned about different data
types that you can use in Python, for
example, you learned that you can have
strings, and you can have lists, and
numbers, and so on, and we stored these
data types in variables. So a variable
was associated to a string, for example.
The problem with this is that you are
storing data inside your Python program.
If you want to really, really store in
data, for example, you want to
store weather forecasts, you don't want
to write those forecast
values in strings, or in numbers, in
your '.py' script. What you want to do
instead is you want to have those data
in external files, for example, text
files, or CSV files, or later on, you
will learn about databases, how to store
data in databases, and get those data
via Python and process them in Python.
But in this section, you will learn
about how to store data in text files
and how to get data from text files,
how to create text files with Python,
how to read the data from text files, and
process them with Python. So that is a
very, very crucial concept of
programming, and so that's an advanced
concept and you learn that in this
section. So have fun, and I'll see you in the next video.