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Welcome back.

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Let's continue our understanding of ant and float.

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We talked about the idea of these two data types and how we can use operations on them that we're familiar

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with from math class, plus a few ones that maybe we haven't seen before, such as modulo or the double

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slash or the double multiply for the power of.

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Now this is really cool because we can get our computers to do well.

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Math for us like a calculator, right?

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But a programming language also provides for us different actions that we can perform.

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Now, besides these ones, we also learn that there's a type of action that we can take.

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There's a print action that we can take, but there's also specific math type functions that ant and

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float are able to use that are built into Python.

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Now these are called wall math functions and functions.

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Something we'll talk about later on are these actions that we've been talking about.

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Remember our diagram here.

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We're starting to learn about the data types and the actions that we can perform on them.

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Now, in most programming languages, these actions are called functions and we have a whole section

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on them.

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But for now there are some functions that we can use.

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So this is a print function, this is a type function, but there's specific math functions such as

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brute.

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And you see right away when I type Ripple is a tool like an ID that hints and tells us what we can add.

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So says round and give me a number.

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And maybe a digit, but let's just worry about the first one for now.

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So around if I do 3.1 and I round here.

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I get.

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Two.

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Hmm.

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Well, that's not right.

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Right.

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That's actually the result from up here, because we need to also tell it to perform with a function

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of print.

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Hey, print to the screen.

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Whatever the result of this is.

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And just to make things easier to see, I'm going to comment this out.

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So I'm just selecting everything and then pressing command slash or if you're on Windows Control slash

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if I click Run.

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I get three because I'm rounding down the number.

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So let's say if it was 3.9, I click.

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And I get four again.

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I'm rounding the number.

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Another math function that's built into Python is something called a, B, s, and you see right away

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that I get abs here and ABS returns the absolute value of the argument.

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And again, for those that aren't too familiar with math, an absolute value simply means, well, no

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negative numbers.

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So an absolute value of -20 is 20.

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And now because we know about math functions, I can start Googling, right?

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I can say, hey, I'm a python programmer and I want to learn about math functions.

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Well, I can go Python three math functions.

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And look at that right away.

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Google tells me that there's a ton that we can use.

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You don't have to memorize all of these.

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As a matter of fact, some of these I've never, ever used in my programming career.

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But it's good to know that they have these tools available to you.

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And as a programmer, this is something that you'll have to get used to.

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The idea that you won't actually memorize every single action that we can take for each data type,

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because some of these are very rarely used, some of them you'll never use in your career.

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The key is to understand how to Google them and how to find them.

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And throughout this course, I will show you the important ones that you're going to see over and over

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and over.

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But as a way for you to develop as a programmer, at least you know that this is how you look for answers

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and find out that, hey, there's different math functions that we can use with numbers.

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All right.

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Let's take a break and continue in the next video.

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Bye bye.