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For now, you have just run your Python
programs directly from the PyCharm IDE here,

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with the play button. But
what does it do exactly?

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So I'm going to do run,
I'm going to run the add

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two ints here. So add
two ints, okay. And it's

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going to ask us number
one, so I'm going to give

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you two, and then number
two, three. Two plus

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three is equal to five,
okay. But actually the

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comments, so the
first line, what this is. So

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you can see we have a
long stuff, and at the end,

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python.exe. So basically,
this is going to run

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the python execute
table with another file,

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okay, with another name,
which is basically the

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file name. So as you
can see, with the complete

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path for the add two ints python file that
we have here. So python add two ints.py.

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This is the command
that gets executed in the

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terminal. So when
you click on play here in

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PyCharm, basically
the program is executed

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just like you would
execute it in the terminal.

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And this can be very useful to know how to
run your Python program from the terminal,

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so you can be more
independent. You can then

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write your code from
any text editor or IDE,

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like for example in
PyCharm, and then run the

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program on its own.
That's great if you just

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want to run an existing
program without having to

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start the entire IDE. Okay,
here you need to start

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PyCharm and click on
play just to run a very simple

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program. So let's see how
to run a Python program

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from the terminal. I'm
going to show you first

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for Windows and then
for Linux and macOS. Note

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that the terminal is
usually more used on Linux

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and macOS by developers,
where basically that's

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the default way to control
and navigate on your

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computer. On Windows,
using the terminal is maybe

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less common but can still
be very useful. And note

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here that the commands
I'm going to use are the

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same on Linux and
macOS but are different on

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Windows. And let's
get started on Windows.

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So what you can do on
Windows is simply press the

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Windows key or just go
to the bottom of the screen

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and just type cmd or command prompt or
terminal or whatever and you just click here.

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And this is going to open a terminal.
I'm going to zoom in a little bit.

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Okay, and you can see
that by default you are

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in your home directory,
so /users/yourname

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or your username. To
see what you get in there,

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you can use the dir
command, so dir is going to

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give you all the files
and folders that you

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have in your directory.
Here you can see we have

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PyCharm project. If you want to go to
that PyCharm project, you simply do cd,

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py and you can use tab
for auto-completion, cd

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pycharm project. You
can do dir another time and

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you can see you have
my first project which is

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what we are using here.
So cd my first project and

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then dir another time and
you can see we have all

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the Python files that
we have here on the IDE.

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So that's the same thing.
And now let's say I want

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to run the add to ints.py.
I'm going to do Python.

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So the Python command
simply and then add to int.

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I can use tab another
time and this is going to run

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the script and as you can
see here, enter number

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one, enter number two
and we have the result.

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And so this is going to
execute the Python program

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the exact same way
you are going to execute it

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when you press play on
the PyCharm IDE. And now

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let's see how to do that
on Linux and Mac OS.

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So the instructions here
are going to be the same

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for Linux and Mac OS. So
you have PyCharm with your

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programs and etc. You
can open a terminal. So open

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a terminal also on Mac
OS on your applications,

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utilities and terminal
on Linux. Well Ubuntu for

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example, you can directly
put the terminal here

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or search here for terminal.
And then well you are

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going to need to find
this file here. We want to

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launch add to ints. So
you can see here the

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project is actually on
that directory. So home,

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PyCharm project, my
first project. And we are

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actually in the home
folder. If you do PWD,

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you are in your home folder. So LS, you
can see I have PyCharm project and then CD,

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PyCharm project. LS, I
have my first project, my

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first project. LS to
list the files. I have my

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add to ints.py. I can just
do Python 3. So make

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sure you have Python 3.
You can do Python 3 version

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to check that you
have Python 3 correctly

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installed with a good
version. And Python 3,

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add to ints.py, I press
enter and it's working.

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So enter number 1,
let's say 4, number 2 is 2,

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4 plus 2 is equal to 6.
That's working. And for

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Mac OS, the commands are
also LS and CD and Python

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3. Okay, that's going to
be the same command.

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Congratulations, you
can now create Python

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programs and run them
from the terminal. In the

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rest of the course, I'm
going to come back to the

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PyCharm IDE and run the
programs from there. But

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on your side, you can
decide instead to just run

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the programs from the terminal.
That's going to be the same.