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Hello, everybody.

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Sorry if I scared you, just checking your alertness.

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All right, now we know our way in loops.

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We can all say that, right, because we have been over lots of examples in force for loops and wire

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loops and seen examples and seen homework and done the homework.

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And we've been through a lot.

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And this path, we've been through a lot, really, it wasn't easy, but now it's time to be professionals

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and to be professionals, you know, to to you get to know the hacks of coding and to know some cool

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tricks in programming.

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All right.

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So in Python, we have sort of flexibility of the code.

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That's why we call Python, because it's flexible.

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And let's see here a few tricks that we can apply upon while loops.

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All right.

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So stopping a while loop with a break, huh?

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All right.

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So up until now, we've seen that we can stop while loops only by having a false statement inside the

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condition.

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All right.

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This is the only way that we've seen in previous videos.

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We can stop it by having a false condition inside the wire loop.

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But this that we already know.

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But what if there is an additional way to stop a while loop without mentioning and without addressing

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the condition inside the whale?

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So there is a way to stop a while, even though the condition is true.

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We can use our friend the break.

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All right, we have encountered the break, if I recall, in collections, and we can also apply here

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inside while loops.

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And how can we apply that?

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We'll see it in a few seconds.

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All right.

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So we have an example, which is based on the previous example, because I don't want to make things

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harder than they are.

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So it's the same example from the previous two videos.

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And let's see how we can apply the break here and how can we stop the while loop, even though even

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though the condition here is keeps being true.

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All right.

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So let's see, how can we do it?

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So basically here in the code below, we again have the number equals zero, which is the counter.

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We had the condition while number smaller than 10.

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This is the while when its condition and here inside the while loop inside the bulk of code.

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Here in the dots, we added we added an additional item.

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We have an if and the if statement says if no equals two, then break.

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So break will stop the loop once number equals two.

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So let's go over the flow.

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We're starting the code we're having here.

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Number equals zero.

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We go inside the wire loop, it's zero.

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We get to the if the if is ignored because number is zero at the moment.

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So we just print it and grow the number by one.

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All right.

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From this point we go again to the top and now we have no equals one again going downwards.

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This statement is still still ignored.

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And again, we're growing the number by one and now we have no equals two.

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So two is smaller than ten.

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Still true.

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So we go inside the wire loop going inside and then we get to the if and now we have if no number equals

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two.

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So two equals equals two.

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This statement is true.

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And then we go inside and right here we have the break key word.

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And basically what happens now is that the code exits the wire loop completely and goes further down

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the code.

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So at this point, the wire loop is executed by the code and we ignore it.

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We do not do the iterations again and again up until we get to ten, which is in two, which is exit

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the wire loop completely because we have a break here.

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This is the whole point.

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So the break basically can overcome the the condition that we have here in the wild condition.

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The break is stronger than the condition on top.

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And this is how can we exit?

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This is how we can stop a while.

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Loop with a break.

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All right.

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From here, I think we should see an additional example.

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Again, a friend from the best seems break.

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We have a friend from the base here, which is else.

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OK, so now let's see, how can we use while with else?

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And it's a pretty logical thing to do.

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All right.

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It's a pretty logical thing to do because let me just go to the slide from the previous lecture.

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So this is the slide from previous lecture.

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So here what we're doing, by the way, is the same Codrea, the example.

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This one is only with if and break, but it's the same numbers, same everything here.

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OK, so let's have a quick look over here and the previous lectures, previous lectures, example here.

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And we can see here that the the number grows by one again and again, right up until the number goes

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straight up to be what?

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To be nine.

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All right.

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And after the number is nine, we also print it and then we go again.

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And I was false.

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Now, ten smaller than ten is a false.

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So what basically happens the code, because it's the while loop completely and runs whatever comes

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after the while.

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But what if I wanted to tell the code, don't just go outside the wire loop, do what I tell you to

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do.

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I want you to do to run something specifically.

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I want you to maybe tell me that we outside the wire loop.

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Right.

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So let's see an example here for what we just discussed.

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All right.

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So, by the way, my thing in teaching is explaining the same thing in different different types of

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views, two or three times up until all the students get the hang of it.

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Even the the ones that have some topics, they are strong in in some topics they have difficulties in.

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So I'm explaining the same thing in different perspective.

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So if you get the hang of it, just straightforward lecture and those of you that have a bit of trouble.

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So I'll go over what I just said again.

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And let's see the physical example of what we just discussed, so in the past, we used if and else

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and it worked perfectly together, but we can use the alst together with wire loop as well as we just

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talked about.

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We will tell the code instead of exiting the while loop.

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Once the condition is false, just go straight ahead to the else.

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Same as we had in its statements once.

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If a condition is not met.

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So go to the elf's, go to the default exit point.

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So here we also have a default exit point, but this time it's of that while loop.

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So let's see the this is the example.

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It's right here what I've just marked and let's see some two bullets regarding what it's going to do.

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All right.

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So add plus one to the number while it's smaller than five.

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So this is the ball right here.

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We have a no no equals one.

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And inside the wire, which spread the number and add plus one to it.

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OK, this is the first part.

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The second part is once the condition is false, go to the else and multiply the number by hundred,

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then print it.

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OK, so we going for one here, first iteration, then we have to second iteration three, four.

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And then once we have the number equals five here.

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Five is not smaller than five.

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This statement is false.

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Don't just exit the wire loop, go straight to the LS and and execute this gold right here.

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OK, so once we go to the house number is multiplied by 100 and number is no longer less than five.

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All right.

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And the output will be is following.

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We have one to three and once the number is is bigger than five, then we're going to execute this line

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right here, which is this print.

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Yeah.

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And we also execute the multiply by a hundred and our number as five.

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So this would be five hundred.

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Have a small mistake here.

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All right.

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So this will be the output.

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And I think it's pretty simple.

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We also have here default exit point, same as we had for if statements.

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And so we have learned several tricks applied on wire loops.

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We have seen here that if and break inside.

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So we could actually while as we wish and also we have seen an example of how can we use an AL statement

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in order to execute the code that we want once the wire loop will be false here.

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All right.

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These two examples cover the advanced part of wire loops.

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I think that we will be meeting in the next video where we go over the assignments and your homework,

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basically.

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And there'll be a bit challenging, I'm telling you, in advance.

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But I think you could get the hang of it because you don't have any material that he's not in the slides.

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So all the assignments, you can resolve them with the information that we have taught together that

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we have learned together.

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And I think that will be just fine.

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Thank you.

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And I will see you in the next video.