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Hi, everybody, and welcome, this lecturer's topic will be integer and thought variables, which are

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numeric variables.

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In the last lecture we have cathode string variables and now we'll talk about numbers.

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So let's go over the definition.

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Python supports two types of numbers, integers and floating point numbers.

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So just a quick reminder, guys, we talked last last lecture.

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How can we identify integer sorry, string variables?

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How can we identify them?

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So we said that if we have a variable equals and then we have quotation marks before and after the value.

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So this will be a string variable.

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Now, as you can see, the numeric variables which are integer and float does not have quotation mark.

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And this is how we can def differentiate this integer and float variables from the string variable.

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So integers are whole numbers.

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All right.

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So when you see a variable and it equals to a whole number, you can identify this is an integer.

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And if we have, for example, Y equals 15, simply the value 15 will be stored inside the Y value.

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So and then we have the float variable, the float variable.

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We have an American value, whether that's a small portion.

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And this is how you can differentiate an integer from a float.

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So once you see that simple point, you can say that this and this variable is a float.

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So let's go quickly over a few examples.

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You can see here the variable age, which is equal to 52, and this is an integer.

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You can see here the wait, you have a decimal point, so this is a float here, also a whole number.

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So this is an integer and another one with the decimal point, the height.

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So this is a float.

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So now that we get the hang of it, let's go straight, straight to PI charm.

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Let's open it our initial project.

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And once it's all just right, click on it new and then create a new file.

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All right, sorry, Carlos, for me.

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All right.

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Let's call it integer.

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And float variables, let's give it the quick headline, Integer and Float.

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Variables, which are numbers I'm giving all of these comments, because if we encounter this fall further

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on like it from eight months from now or a few weeks from now, so we can get what the content immediately

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using these comments.

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So let's start quickly with the simple example.

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Print off a simple string.

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Variable, and let's just declare a new one.

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And let's give it the value 10 then, Brent, same as we did with strings, and that's put the variable

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inside.

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Right, click on the file run and there you have it, you have the variable value right here and now

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I'm going to do something and different before the variable here in the industry in their print.

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So let's add a string.

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Let's say integer variable value is two dots, then space.

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And then after the quotation mark, we want to add this variable to the print.

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Let's just add the plus side and that's printed.

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Right.

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Click, run.

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Whoa.

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All right.

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So we can see here in the console, I read the text, which indicates obviously we had an error up until

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this point.

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We didn't handle with exceptions or errors, but we will deeply for the further on in the exception

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handling part.

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But right now, let's do it the first time.

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So always when you have an error, you have indicative information in it.

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So try to read it to understand what happened.

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So we can see here the file, which is integer and float variables, which is our file.

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And we have an error error in line five, which is this line, the print one.

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And you can see here that we have can only concatenate string and not int to string meaning by charm

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is angry with us that we mixed string along with integer.

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He doesn't like it, so we need to solve it in order to remove this error.

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And how do we resolve this issue?

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We need to have one type of variable, one type of variable inside the print so we simply add brackets

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before and after the variable.

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And then we want after we have brackets around it that we want to add here, the letters s t r and you

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can see it turned purple for me.

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Maybe you have other calls.

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It doesn't matter.

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This means that we will convert this the of the integer variable into a string in order to have one

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type of variable inside the print.

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So let's try to run it right now again.

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There you have it.

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So integer variable value is ten.

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So problem resolved.

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All right.

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So let's give some more manipulations and math manipulations on integers and floats.

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And all along the way, I'm going to use the text and then string and then I'm going to put the number

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inside for one simple reason, because if I remove this text and then you will have here at 10 or 15

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values downwards, you will not know which one is or what, what manipulation we did upon the numbers

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you will see here.

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So when you have indicative text and then a number, you can know what the number had been through.

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So let's go on.

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So first of all, that's defined simple variables for further money.

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Two locations, so let's do a simple variable, A. And let's put it five, and then we have simple.

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Variable B equals then and let's start with the summary with the plus sign.

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And let's create a third variable, which will contain the summary of two of them summary.

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Result.

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And then that's put simple, by the way, I just want to remind you gathered that once you once you

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try typing, you have all of these options open here.

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And instead of typing the whole simple variable, a thing with your keyboard, you can just heat enter

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once selecting what you want.

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Plus simple variable be enter.

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All right.

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So in the last lecture when we talked about strings, so once we do the plus sign, we just try to printed.

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What we had seen is that you get the string first string and then the second string printed one after

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the other.

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But now we're dealing with numbers.

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So this would not happen.

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Now the plus sign will do a mathematical action upon these numbers.

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So let's just try to print it.

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Some are into that then after that plus SDR.

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And brackets and some result, let's print it and see what happens.

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Great.

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So we have the summary of 10 plus five right here, which is 15.

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And that's amazing.

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So let's do another one.

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Let's do.

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Multiply.

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Two numbers and

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let's do it again, multiply result equals simple number A and then do the star.

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And then simple, no be.

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All right, then, let's try to print it.

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And to the plus, all right, and then multiply a result.

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And don't forget to convert it using brackets and SDR letters and before it and let's try to print it

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five times, then we get 50.

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So we get it right here.

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And now we need to do a division, divide two numbers and divide result.

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And let's do.

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Simple, not a simple variable, a then slash and then simple, not a variable B.

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Sorry, B, and then A, we want to divide five divided by ten, divided by five.

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Then be divided by a.

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All right, click, Ron, I, I disappointed sorry, my bad print enter

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divide.

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To devise a result, let's have the same pattern as the others.

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Right.

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Just added the results here.

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So we have results for all of them.

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And plus SDR and brackets and double click on it control.

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See the copy control to paste and.

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That's right.

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Click and run.

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Great.

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So ten divided by five.

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We have two.

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All right.

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So this answer is correct.

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And now let's try to do power two numbers.

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So power result.

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And once you want to do power, you need to do for example, let's take a simple variable A and do it

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power and two.

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And let's bring the result.

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So basically, when you do power plus ACR, Brackett's, same thing, you seeing the same thing all

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along, and once we try to print it, we'll see.

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Twenty five.

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For those of you who don't know what power is, power is, just want to do a quick point here.

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So power is basically this.

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All right.

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So this is what you get with power, you just write, uh, you just write two stars, two times a star,

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and then you have the power action applied.

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All right, great.

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So next one in line is a special one is modular and modular is something that you don't encounter in

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daily basis.

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And but still, we're going to try to teach it and try to learn it.

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Sorry.

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And basically what that means is when we take a variable, for example, the value of five, right,

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because simple variable is five and then you do the percentage sine and then you do two.

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Basically, when you take five and you divided by two, you get the whole number, which is two.

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But you have like a left left over, which is one.

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All right.

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Because it's not a whole number that you get when you divide five by two, we'll get to where the left

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of one.

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So modular would give you the left one, the one the.

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This is the purpose of modulo.

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And let's try to see SDR copy paste inside the SDR and let's run it.

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All right.

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So there you have it.

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You have the model result.

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And now let's try to all of these words, integer variables, and let's try now to use a flawed variable

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which has a decimal point.

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It's not to use each decimal point variable, which is float, and that's do that.

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Valuable, a stake, two point five, and that's IMO very will be, and that's put a zero 25 and let's

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try to submit a new one summary.

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ofThe.

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To that symbol of two floats, to be more exact, so that more variable A and then that's A more variable

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B and let's try to print it right here, a summary of two float variables and plus the I'm sorry, ETR

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and Samari.

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And it's right here, you can click it with your mouse as well.

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And let's run it so we have a plus here so we can get.

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We're going to get two point seventy five when summarizing this value along with this one.

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And let's do one last thing.

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All right.

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Up until this point, what we did is we took these two variables, all right.

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A and B, and we apply the actions upon them along the way.

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But you don't have to use variables like this and then to apply actions between the two variables.

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All right.

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You can also just take two numbers as well and apply actions upon them as well.

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It's the easier thing.

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So I'm just going to give you one example.

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It's the easier way and the harder thing is to apply actions upon the variables.

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Actually, it's pretty much the same.

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But I want you to see the whole all cases.

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So you become a ninja in numbers on Python.

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So right here you can see all mathematical actions.

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All right, guys.

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So it gives you great power once you start writing automation test cases and you'll need to use math

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inside your test case.

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This gives you great power, guys, because now you know how to use numbers, you know how to play numbers.

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And later on, you're going to create lots of variables using these numbers and passing the variable

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and then using it and applying math actions on them.

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And this is very, very useful stuff.

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So let's do like this apply, act, apply actions upon variable.

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It's not just actions, it's math actions upon the very well.

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And let's do, for example, uh.

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Actions on a variable and again, it's not actions just like that, it's math actions equals, for example,

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let's do four times five.

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And let's just try to print it and apply math actions on a variable and.

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SDR, that's Sculpey, this one, and open the brackets, put it inside and try to run it.

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All right, so you can do this option as well, you see, I just apply the actions straight ahead on

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a variable without using declaration of variable before applying actions as we did in all of these places.

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So right here, we just applied it straight ahead on a variable.

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And you could do it with all the math actions that you want.

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Let's try the plus sign and it's a nine.

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All right.

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So that's about it, guys.

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Now, you have domination of all math actions, both on integer and offloads, so you can use whole

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numbers and also use float numbers with decimal point.

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So this party's is over.

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And I urge you guys that to know that knowing actually knowing the stuff, knowing the material is not

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just understanding it, but please do the following lectures and practice it so it will get deep in

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your mind.

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So later on, when you know all the parts together, you'll start writing test cases and you'll be a

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professional, you'll be a true ninja.

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So please practice first.

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First of all, just read the instructions in the next lecture of the assignment.

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Try to solve it by yourself.

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And if you are not mentioning managing to solve it by yourself, then see the following after that lecture

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to see the resolution.

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And I'll show you the whole resolution of the practice.

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And that's about it, guys.

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So thank you.

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And see you in the next lecture.