Okay. So now, that means,
if I run a terminal,
so this of course is start run terminal.
So Python two is still there,
but Python three is also now there.
So, we should have Python three installed.
So we install Python 3.6, and so,
there we go and that's all it takes to install Python three on the Macintosh.
So let's write our first little Python program.
I'm going to- I like Atom,
and so, I've got this Atom editor, it's Atom.io.
Right here, Atom.io.
Download and install the Atom editor.
I like it because Atom works the same on both Windows,
Mac, and Linux and it has syntax highlighting,
and so I really like things like that.
So I'm going to make myself run a simple Python program.
Hello World, like we always do.
Now, you'll notice that it's not syntax highlighting yet but I'm going to do a File,
Save, File Save As.
I'm going to go into my desktop,
and I want to make a folder called py4e,