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Welcome back.

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We just learned what a programming language is, it's just a set of instructions that we give to a translator

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and this translator can be an interpreter or a compiler.

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And we give these files that we create our own code, our source code to these translators, and they

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allow us to give instructions to machines, to computers, to phones.

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So we learned that we need these machines in order for us to write, Python write.

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How can we get these?

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Well, we download them and here we download Python from the Python Software Foundation from Python,

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Doug.

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Now, before we download Python, we're going to wait a little bit, because in this course, I want

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you to understand why we're doing things, not just follow my tutorials, follow my videos and, well,

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not understand the meaning and the fundamentals behind what we're doing.

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Things you should be able to teach, what you're going to learn.

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So let's take a pause here for a second.

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If this is the first time that you're learning a programming language, I have some good news for you.

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At the end of the day, all programming languages do the same thing.

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They tell the machine what to do.

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However, different languages have different ways of doing it.

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The beauty is that most languages have very similar principles.

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If this is your first programming language, well, this is going to be the hardest part, learning

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the first one afterwards, every new language you learn becomes easier and easier in the sense that

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it's not the same as, let's say, learning English and Japanese two very distinct languages in programming.

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Things become a lot easier as you learn that first foundational language.

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Now, if this is not your first language and let's say you've written code in C, C++ or JavaScript

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and you just want to learn Python, well, you're going to find these first couple of videos quite easy.

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But bear with me.

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Trust me.

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We're going to get into some advanced topics here and we're going to make you a full fledged developer

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by the end of this.

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But let's go back to this topic at hand, this idea of downloading this translator.

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The thing is, when people refer to Python, the language, they're most likely talking about the implementation.

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That is, they're talking not about the language itself, because Python, the language is just a specification.

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You can think of it as a document that somebody wrote that says, hey, when I write the words def,

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that means something in Python.

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And when I write something like print, that means something in Python.

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But the translation machines, well, we can have tons of them, different interpreters, different

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compilers.

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For example, Python dawg, when you click download here, you're actually downloading this, the C

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Python, because it's written in the C programming language.

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This is what you're downloading.

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It's a program redundancy to read your Python file and well run it on a machine.

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But there's other implementations, for example, there's the Jiten project, and this is a translator

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that is written in the Java language.

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There is Pippi, which is actually written in Python, so it's a interpretor, it's a translation machine

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written in Python, and then there's also things like Iren Python, which is written for the net framework.

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So here's a little trick question.

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When you download from Python, the official language is actually C Python.

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You're downloading this interpreter that follows the Python specification.

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But at the end of the day, it's a machine built by somebody.

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But these machines can well come in many forms.

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So when most people talk about Python, they're talking about this one C Python that, well, does our

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translation for us.

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It interprets our python code and runs it on a machine.

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So we're downloading this.

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And if you want to really get into details as to what we're downloading, what we're downloading, a

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machine that takes our Python code, which, don't worry, we're going to write.

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And it goes through the interpreter, which we download using C Python.

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And this C Python is going to create something called a bite code.

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For example, this bite code print's hello world on our screen.

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Now, this might look like gibberish to you and even for me, I don't know, by code, this looks pretty

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vile, confusing just for printing.

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Hello, world to the screen.

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Well, the interpreter does that automatically for us.

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We see we don't see it, it's behind the scenes.

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Now, once it creates a bytecode that is closer to machine code, it then uses the C Python virtual

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machine again, just something that runs this code and then this code gets run on our machine.

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Now, you're never, ever going to be asked this question in an interview.

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I mean, maybe and most of all, I don't know this, but I want you to use this as a reference that

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when we write Python code throughout the rest of this course, this is what's happening.

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We're writing Python.

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It goes gets interpreted line by line.

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And formed into what we call bytecode in this bytecode gets run on the Sea Python virtual machine,

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which runs on our computers, our phones or laptops, and when we're downloading from Python Dog, we're

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downloading these two pieces so that once we have them downloaded, we can run Python.

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All right, that was a tough one and I mean, we just got started.

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I hope your brain is an exploding again.

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This is something for you to use as a reference.

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But you know what?

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I think it's time for us to learn how to actually run Python code.

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And don't worry, we are getting there.

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We are going to write our first Python program very soon.

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I'll see in the next one.

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Bye bye.