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- [Narrator] Once you've
downloaded the zip file

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containing the examples, you'll want

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to extract its contents.

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And we assume that you're
going to place the examples

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folder into your user
accounts documents folder.

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Typically, you can do that
simply by double clicking

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the zip file and, depending
on which operating system

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you're using, you may
want to move the zip file

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into your documents folder
first before doing that.

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And it will then automatically
extract the contents

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into that folder or give
you a dialogue in which

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you can select where you would
like to place the examples.

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Now, once you navigate
into the examples folder,

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you're going to find
three kinds of examples.

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There is going to be a sub folder called

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snippets underscore P-Y,
which contains the individual

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code snippets that you can
execute with the Ipython

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interactive interpreter.

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And you can execute those
a couple of different ways.

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The way I would recommend it,
as you're learning Python,

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is to simply go ahead and
type the snippets yourself.

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And then, once you become more
familiar with the language,

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you could copy and paste
individual snippets, as well.

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You're also going to find complete scripts

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which are also dot P-Y files.

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Those will be in each
individual lesson's directory.

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And then finally, there
will be another sub folder

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called snippets underscore I-P-Y-N-B,

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which is the filename
extension for a special type

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of file called a Jupyter Notebook.

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And in lesson one, we're going
to show you how to execute

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each of these three
different kinds of snippets.

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So, once you become
familiar with all three ways

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of doing things, my recommendation
would be that you work

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in the context of Jupyter
Notebooks because it is

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the most convenient overall,

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especially if you want to really
experiment and retry things

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that you've done previously.

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Now, within the examples
folder, you'll see a bunch

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of sub folders that are
organized by chapter

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or, in the context of videos,
by what we call lessons.

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Those are named C-H with
two-digit number after that.

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That represents the
chapter or lesson number,

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so CH01 would be the examples
that correspond to lesson one.

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CH02 would be the examples that correspond

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to lesson two, et cetera.

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So let's take a moment and
look at the examples folder.

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In this case, I'm showing you
the contents of the examples

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folder on my Macintosh computer,
but of course this will

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look similar on each
different operating system

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you may be watching the videos from.

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And, as you can see, CH01
for the first lesson, CH02

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for the second lesson, et cetera.

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Within those folders, you're
going to sometimes see

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individual dot P-Y files.

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Those are going to represent
either complete working

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Python programs, which
we refer to as scripts,

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or possibly in some of the later lessons,

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these will represent source
code that's going to be

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imported, as we call it,
into other applications and

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typically would contain shared
code that we want to use

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across multiple examples.

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Now you'll also notice
these other two sub folders.

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Most of the chapters will
have these two sub folders,

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and most of the lessons.

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These snippets underscore
P-Y again is going to contain

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dot P-Y files similar to
the ones up above here,

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but where in each of those files,

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you have a bunch of individual
snippets that are meant to be

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executed one at a time as
you follow the presentation.

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And we also provide
those same exact snippets

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in the context of I-P-Y-N-B
files for those of you

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who wish to work in the
context of Jupyter Notebooks.

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And you'll see both standard
Ipython and Jupyter Notebooks

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in lesson one, where I
overview both of those

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for the purpose of executing
the code in these videos.

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Then you can kind of make
the choice as to which way

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you'd like to execute
the code on your own.