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Let's talk about arguments versus parameters, which is one of our key terms that we use when describing

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functions.

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Let's see what they mean.

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You see right now, our say hello function is pretty generic, very simple, right, we're just bioprinting.

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Hello.

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It's kind of useful, but not really the power of functions beyond just being able to call this multiple

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times because it only lives in one location and memory is this ability for us to make it dynamic.

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For example, in these brackets.

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I can give it what we call parameters.

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So in here we give it parameters.

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Inside of the Brackin, so, for example, I can give it a name.

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Which is a variable that I just made up, I can call whatever I want and I can leave it like that,

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or I can keep giving it parameters as many as I want.

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I can keep adding a hundred if I want it to.

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So in this case, let's just say this is an emoji, so these are two variables or parameters that I've

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created and this say hello function is able to receive.

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These two parameters, what does that mean?

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It means that we're able to use these variables inside of this function.

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For example, I can create this as an F string and say hello.

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The name.

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And then finally add the emoji, and because I have these parameters, I can use them as variables inside

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of this code block.

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Now, these parameters allow us to give the function when we call it what we call arguments.

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And by the way, the confusion between parameters and arguments, people usually say one when they mean

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the other.

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It's a little tricky.

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So hang in there.

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Arguments are used as the actual values we provide to a function.

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So now in Say Hello, I can give it a name in my case, let's just say hi to myself and then I can give

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it an emoji and you see how my editor is giving me the hint that I should give it an emoji, because

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while I defined it here again, something that editors help us do.

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So let's just give it just a smiley face with the tangoed.

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Now, these are arguments.

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These are the actual value we provide to the function and the name of the variables that we use that

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we receive are called parameters.

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So parameters are used when we define the function and arguments are used when we call the function.

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Define and call, and by the way, some people also like saying call or invoking the function or invoke

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the function.

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So if you ever hear those words, you know what they mean.

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So if I run this.

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I get hello, Andre, with that smiley face.

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And this is when functions get really powerful because we're able to not just make generic functions

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that always do the same thing, but we can create functions that do things based on what parameters

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we give it or what arguments we call it with.

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So that now I can use the say hello function to say hello to my friend Dan and also my friend Emily,

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and if I click run, we've made our function more extensible.

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We can use it in multiple places, and if we're designing a game, well, we've just used this to greet

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our users and based on the username, I can use the same function over and over.

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Again, we're keeping our code dry and clean by doing something like this, how cool is that?

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All right, let's take a break and I'll see you in the next video.