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Welcome back let's talk about a important term when it comes to programming.

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And that is operator precedents.

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Now what does that mean.

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Again we're using our knowledge from math class.

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It's the idea that if I do 20 plus three times four it means that different operators have precedence

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over different ones.

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That is we multiply this first equals to twelve and then 20 gets added to twelve because the Python

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interpreter is going to follow a basic set of rules.

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For example if I do 20 minus three here and let's print this out click Run I get eight because three

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times four gets evaluated first which equals to 12 and then subtracted from 20.

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It's not that this goes first and then we multiply 17 by four and this operator precedents shouldn't

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be new.

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Right.

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If you've taken any sort of math class you understand that this is how well math works and this works

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the same in all programming languages.

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So the order is this first.

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We follow the brackets.

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So whatever is wrapped in a bracket we do first.

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The second is we do the power of.

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So whatever is done in the power of will be after parentheses.

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For example if I do parentheses here and then to the power of let's say two or less two plus two to

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the power of two.

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Well the first operation that will happen is 20 minus three because that's the first precedence.

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And then we do two to the power of two because that's the next precedence and then only after we do

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that we add these two together.

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If I click Run I get twenty one which again makes sense.

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Seventeen plus four after the power of we have the multiplication and division and then finally the

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last precedence is addition and subtraction.

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Now this isn't going to be a math class.

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Some people really love math.

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Some people really don't.

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But I want to just give you this basic understanding of operator precedence.

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When you see it.

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We'll do some exercises here to get accustomed to it.

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But trust me this is as mathy as we're gonna get in this course.

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The math part of the course is well just here.

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It's gonna get a lot more interesting as we learn about different data types.

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I'll see in the next one.

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Bye bye.