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Welcome to the brand new section where we're going

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to take a look at functions and I guarantee you

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that no course on programming

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will be complete without talking about functions. OK.

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Functions are extremely important and believe it or not,

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we've actually been working with some functions and we've

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even created some of our own functions already.

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In this course,

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you just don't know it yet. So in this section,

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we're going to focus on functions.

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I'm going to show you how you can create your own custom functions

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and then how you can use something known as the parameters.

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What do we want our function to work with? What kinds of data types, right?

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Things like that.

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We're also going to take a look at keyword arguments,

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local and global variables and so much more.

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And just like with the previous sections,

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there's going to be a coding exercise at the end of the section.

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So please do attempt it.

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Hopefully you'll be able to pass.

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If not, don't worry, I'm going to provide you with this solution.

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So without wasting any more time,

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let's begin talking about functions.