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Hello to all the students, and in this video, we'll try to see the examples that we have been over

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in the previous lecture.

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All right.

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So once the project is open, just create a new file.

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As always, you can call it if statements basics, part two.

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And right here we can write if statements.

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BASIX far too surprisingly right.

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And let's bring out the age equals 30 variable that we really love and and then put a name variable

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equals to James.

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Right.

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And right here, let's see example number one, which will be logical operator.

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And in this example, we'll try to compare the age.

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We'll put age bigger than 20 and name double equals James.

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Right.

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So you can see both examples right here.

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The double equals and also the logical operator does have the opportunity to use them both.

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Here you can see that all of our material and all of our theory eventually comes together with strings,

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logical operators, double equals sign and so on.

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All right.

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So right here, let's just print example one.

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And we have my name is James and.

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I'm.

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Over 20.

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All right, and also I can drink now in some countries, I'm just joking, it's not educational for

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those of you who are under 18.

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It's not educational.

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All right.

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So you can see right here, my name is James and I'm over 20.

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And this one, we can see that once we to the logical operator right here, it's marked with orange.

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Same as if it means that this is a saved word in Python.

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It's saved for a special, special word.

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And you can see why it's special because it's used in if statements you see Boolean Operator.

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Well, it has many names, like it depends on which platform and where you read about it here.

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Pyfrom saw slabs, not slabs, though, called Jedburgh.

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The guys that who invented by charm, they call it Boolean Operator.

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All right.

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So you see it's a special word, same as if, for example.

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All right.

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By the way, if you want to read about if you can read about it once you hover above it, it's already

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recommended because you can learn from everything.

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Like, for example, you can read it and from here understand something you that you didn't know before.

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All right.

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And right here, we can put the alse.

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And both your example one.

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Default exit point.

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I'm writing this because I don't really care what they print, I just want to show just want to see,

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like, whether the code went to this bulk or to this bulk.

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Right.

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This is what interested me, the exit point.

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So both of these values must be true because we have there and logical operator, I hear once one of

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them will be false, that this thing would not be executed, but this thing would be executed.

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So let's try to feel it, feel it and see what happens.

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By the way, you can see here that we used a double equals Mark, and once I race one of them, we have

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an error because once we hover above it, yeah, we're having some kind of error here.

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Like the error error message doesn't even help us with anything.

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Python doesn't know what to do with what to do with it.

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That's it.

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So once we do this double equals log, everything's solved.

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All right.

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So right now, let's try to change it to Gaim and see whether this one would be executed.

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Let's try to run it.

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And as you can see, it goes straight to the default exit point because one of these values is false.

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All right.

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So for this one as well, like age is 30.

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And once we just change it, for example, we put Dan here.

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So this one would be false right now.

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Try to run it.

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Also default exit point.

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And once we turn it to 30, 30 is bigger than 20.

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We run it right now and everything's fine.

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Right.

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So this executes once this value and this value, they're both through output's.

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All right.

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Let's go straight ahead to the next example.

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And it's a similar to this one, actually.

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We don't need the second example.

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We can just use this.

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No.

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Yeah, we could just put here and change it to or.

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All right, or maybe the best thing to do is just copy it so you have it in your attachment file of

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code, both examples, right?

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So just copies right here.

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And then problem resolved, just change this one to two and this one to two as well, and he went in

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and out of space and he we need or it's already and here we put.

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All right.

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We'll find out.

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Right.

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Just copy all the bulk of code and just, I believe in shortcuts.

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All right.

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I believe in shortcuts because there are some specifical like specifical work that you don't need to

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rewrite it again because it's the same code we just change this value to or that seats don't need to

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write it again.

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Just market.

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Right.

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Click copy and paste it below.

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All right.

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So right here we have the same the same statements as we have in the first in the first example.

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But right here we have the order.

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And that means that once one of them is through one of these, that one or that one is true.

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So the values would be the output would run this code.

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All right.

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So let's see, let's run it first time was both of them true?

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So once both of them are true, you can see that the chunk below the difference because we need at least

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one and once both of them are true.

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So obviously this one will draw on.

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But also if I put a 10 here.

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All right, I don't care what happens in it, for example, for now, I specifically changed this value

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to see what happens in example number two.

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So ignore what you see, the output of you right now.

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All right.

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So just run it.

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All right.

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Still, you can see in the second example, my name is James and I'm over 20.

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So this line runs.

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All right, this one, this line runs, even though the output of this age, bigger than 20 is false.

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Once we have age equals then and only this one is true.

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So we can see that or logical operator works properly.

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And it helps us to determine even if one of them is one of them is true.

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So we will have a positive output right here under the IF.

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But what happens once both of them are false.

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All right.

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Both of them false.

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You can see an example, number two, that obviously goes to the default exit point, which is the false.

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All right, so that's about it, regarding the logical operators, they're pretty easy.

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All right.

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As you can see, pretty easy.

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Nothing special here and same as simple if statements.

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But now we have two statements in the same if and just we have a connector, which is the logical operator

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between them.

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All right.

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The third example will be dedicated, obviously, to the nested if because it's really important to

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understand.

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It's also how it will also help you further down the road with the final project.

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We're going to create at the end.

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All right.

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So right here, I'm just going to add another variable called Married.

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True, like that, and then I'm going to do like this, if age bigger than 20.

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And name equals.

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James.

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Just copying the top the top line right here and then, all right, so just want just a quick reminder,

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the nested if statements says that under the first main, if we going to insert the nested part.

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So right here, we're going to have another if and just going to put here married.

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Double equals true, which is a boolean variable, right, if married equals true, then I'm going to

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say to the guy, first of all, example three, good luck.

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It's gonna be a long, happy road, right?

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Being optimistic.

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Yeah, it's not cynical.

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I'm really not.

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All right.

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Yeah.

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It's going to be a long happy.

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Right.

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All right.

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So if you're bigger if you're older than twenty and your name is James and you're married.

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All right.

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You're hearing me, James, if there is a student named James is for you.

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Right.

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So if this would be true, both of these values would be true.

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And then if only if both of them are true, we're going to go inside here.

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But.

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We're going to do it here, the nested.

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Nested alse.

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Yeah, and you need to dots here and also we need to have the parent else as well.

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Uh prent.

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Example three.

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An apparent.

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Parent alse, yeah.

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All right, so that's about it, so you can see the following flow.

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We're going from top to bottom.

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We're coming this line right here.

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And the question is age above 20 through then we have and yeah, then we have the end name equals James

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also Drew.

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And just because of because both of them are true, we're going to this chunk right here.

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We're not caring about this L'Esperance here.

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We're just interested in the chunk below the left and right here.

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We also have additional if this one is in nested if and we ask again, is married equals true.

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And if it's true, we run this code if it's false on this code.

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All right.

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Let's try to fail it, fail it in advance and and try to get this line right here.

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So basically, what we need, we need to fail one of these terms right here and then fail the if statement

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right here.

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So, first of all, going to put false not married.

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So this one would be false.

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This will help us to get here.

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And also, I'm going to change the age to 10 going around the code now.

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And the only thing that interests me is example number three.

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All right, great.

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Not really great because I made a mistake.

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And it's a good mistake because we can learn from it once.

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This one is false.

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So all of the code got to go down here.

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And why?

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Because we need both of them to be true in order to get to this part that I marked right here, and

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once this one is false, we're going straight ahead to the parent house.

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So let's get it back to be 30 and run it right now.

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And we'll get to this line right here, Ron.

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Hoo.

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Yeah.

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So.

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This false.

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This one is sorry, this one is true, this one is true.

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Now we got to this chunk right here and we're asking if married is true.

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And the answer to this part is false because it is not true.

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It's false.

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So this one is a false statement, right?

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Remember this sentence?

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It's a false statement.

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It's not.

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It's like it's a lie.

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In other words, this one is a lie.

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This one is a lie because married equals true.

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It's a lie now.

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Married equals false.

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So it's a lie.

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So because it's a lie, we're going here to the house.

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Very, very simple.

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All right.

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I think this covers the advance sorry.

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The bases, part two.

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And we have seen lots of examples in the previous lecture and we have seen them in live right by charm.

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I think we're ready to go ahead and start the advance part of if statements over there.

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We'll see much more examples will expand our knowledge.

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And right after we will have a wide assignment for these statements because it's really important to

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understand it.

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And also, don't hesitate to try to resolve your assignments by yourselves after the advanced lectures.

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And that's about it.

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I will see you in the next video.

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Thank you.