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Hi, everybody, welcome.

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So this video will console resolving the assignments of dictionaries, the advanced part.

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So let's begin more.

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Once our project is open, let's click right click on the project.

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Then you bite on and give a meaningful name, which will be collections dictionary project.

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This advanced, right?

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So this would be also, Karl.

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Lection dictionary practice.

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Advanced.

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And here I'm missing Kenny.

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All right, it's collections.

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Yeah.

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All right, so first of all, first assignment was to create a dictionary.

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Daksha.

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Wary of building attendance, right?

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So how do we do it?

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All right.

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We just do the following thing, we do curly brackets, and then here we would put, by the way, just

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a quick note and didn't remember if I already mentioned it.

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But it doesn't matter if you put a single quotation mark or a double quotation mark as long as you don't

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have one of each.

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OK, as long as they're from the same type.

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So is the same thing for Python.

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So first of all, let's create the floor first floor.

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So floor one.

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And right after we submitted the key, now we need to submit the right part, which in Nonis the cells,

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not Nestel dictionaries would be disvalue about.

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In our case, we have a nested cell here with additional key, which will be first apartment like this.

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Yeah, and here we have Rachel and then we have second apartment and how we here we have the closet.

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Here we have Gene.

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By the way, have a look right here.

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I know I've said it a single quotation mark here, I have double quotation marks.

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Everything's fine, there's no error.

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But just for the sake of order, which is going to put single in every one because I like order.

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Don't like mixed stuff here.

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OK, so we're fine and right after this, and I'm just going to put the comma here, because we have

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finished like looking in an overview.

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So this is the parent cell.

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We have the key section here and we have the sort of value here.

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And once we finished it, we put a comma.

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And because I'm close to the end of the line here, I can also go down the line using enter.

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And right here, it's more static, you know, and right here I'm going to pull floor to.

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Yeah.

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And the same thing.

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So here we have quelque curly brackets and we have here the third.

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Apartment.

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With Jack, which is Joe is the resident, so you see, like if looking at the dictionary now, it looks

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pretty complicated, right?

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How the curly brackets and then you have a key and again, curly brackets and ECOMIL, what's going

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on here?

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But if you drill down and break break it down into small pieces, if you break down the problem into

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small pieces, so it's pretty easy.

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So you have a key here.

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Correct.

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Then you have two dots and then you have the place of the value.

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But instead of the value, you just create another dictionary, just open the brackets and put another

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key of the value, comma, key value.

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Close it.

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OK, it's the same thing, always the same thing all over again.

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All right.

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Also here we have a key to that curly brackets, key and value, and then the closing brackets of the

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whole dictionary.

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All right, so let's print out the dictionary.

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Yeah, so casting and then building attendance, yeah, and let's run it there we have it.

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So we have the dictionary printed out.

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Let's head over to the second assignment now.

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We are we were asked to extract the defendants names name who lives on the first floor, second apartment.

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Right.

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So we want to extract the value of who lives, whoever lives in the first floor, in the second apartment.

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So first floor, second apartment is this girl.

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So now what we need to do.

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Oh, I'm sorry.

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I have a mistake.

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Right.

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We were asked to extract nested cell items.

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Sorry, extract.

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Nested sale items like this.

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So what we have now to do, what we need to do now is to, uh, mention the dictionary and as we did

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already, just to mention the key here.

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And then once we mention the key, all right, we could we would print out all of these items.

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OK, let's cover it with print, uh, first.

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First floor items of the dictionary.

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And string casting like this and the right click in the wrong, let's see if we were right.

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All right.

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So now we have printed out all the items which are in the first floor and these are the items here.

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So what's the logic behind it?

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You just mentioned the key and then it will give you the what what appears on the right side of the

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two dots.

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So basically, this is what we need.

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And now we have by the way, I want just want to mark here the number of the assignments.

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So it would be more clear in the print out what we're dealing with.

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And now we were asked to extract of whoever lives.

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And the second apartment, right?

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Which is gin and what we basically need to do, so let's have a look at this.

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All right.

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So let's learn from our examples right here.

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We drilled down one level.

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What do you mean one level?

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We just entered the dictionary.

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We entered it, and then we drilled down only one level.

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We just took the key and we said, hey, give me all what you have for this key.

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All right?

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But now we need to drill down twice.

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We need to take this key and afterwards to take also this key.

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OK, so we already seen an example for it in the previous video and sorry, not the previous one before

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it.

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And basically what we need to do is, again, to mention floor one here like this and right after to

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drill down one more.

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And what you need to do is to get the second apartment key like this.

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And cover it with print, obviously.

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Brent of the then then and the second apartment like this.

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And this is assignment number three.

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All right, so we have some malfunction here, we missed the plus side, of course.

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Let's run it.

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What we expecting to see is Ginne, obviously.

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OK, there you ha.

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There we have it.

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We see Jeanne.

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So we drill down once here with this key and then we drilled down twice with this key.

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And then we get the gin, then we get the resident.

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All right.

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So the assignment number four was to add a fourth apartment to the dictionary in floor two.

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All right.

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So add a fourth apartment on floor two.

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And how do we do it?

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Basically, we want to put Carol there.

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So we mention the dictionary and then we mention the first key that we want to access, which is for

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two.

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And then we mentioned the second key, which is not existing at the moment, which is apartment four.

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And then we put the equals and we put Carol inside the place that we want.

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We want to put her in the key number, first key, which will be four two.

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And then we want another key or floor number for.

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All right.

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Like, we have third apartment.

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We want to put it here, inside here.

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So maybe it's better to put it like fourth apartment because it's all letters here.

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No numbers.

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All right.

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So this is the second drill down.

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Let's run it.

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Oh, I did it printed, of course.

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All right, so we're expecting to see Carol, uh, right here.

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So we're in for number a floor to fourth apartment.

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We just right here.

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We mentioned the second key, which is existing one.

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And here we did the same.

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But this was not an existing one.

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So just if it's not there, Python is going to create it for you.

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OK, and now we need to remove the fourth apartment of the dictionary.

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So what we basically learned is to do the following, right?

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We did.

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We did.

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We learn how to do this and put here value.

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But now we want to do it in a nested way because we want to remove a the whoever is in the fourth apartment.

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Um, yeah, sorry.

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Not the fourth but the first.

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Right.

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So we want to remove whoever in the first apartment.

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But if we will put the value of a floor one here, what are we going to achieve by that is removing

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the whole floor and we don't want to remove the whole floor because we just want to remove this thing.

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So before we making the pop, let's do what we did in the second assignment.

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So right here, we have drilled down once, OK, to get to where we want.

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So let's try to do it here as well.

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Let's do it like this.

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Drill down once and after we're inside floor number one.

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OK, so let's bring this inside here, OK?

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And inside here, we would like to pop the first apartment.

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I because this is what we want to remove.

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So we're inside one.

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We're inside here.

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We're looking at the attendants and then we head straight over to the first apartment and remove it.

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And let's bring that.

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After removing the first apartment.

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All right.

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Oh, right, so what are we expecting to see now is this thing, first apartment and Rachel are removed

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completely.

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OK, so we have seen seeing here only second apartment on the first floor, so this is a success.

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Oh, OK.

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So that's about it.

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Regarding the practice.

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This was a bit challenging.

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I think you can agree.

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It's not like practicing shrinks or integers.

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It's a bit more complicated.

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It's not a regular list or a regular dictionary.

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It is a nested dictionary.

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And you have to think a bit deeper here.

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And also the fifth assignment was a bit harder than the rest.

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But it's OK.

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I want you to use your brains hard.

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I want you to fight with the code.

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I want you to struggle because once you struggle, you become a ninja.

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And my job is to prepare you to be a ninja at the end of this course.

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So, OK, so don't get upset if you are not able to resolve all the assignments because some students

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are writing me the some of the assignments are a bit hard.

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They're supposed to be hard, especially the fifth one.

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And I what I want to challenge you all the time, so don't worry about it.

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It's OK.

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That is challenging.

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It's OK that sometimes you are not completing all the assignments.

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And our job here is to practice to see as much examples as we have.

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And also, I really recommend you to take this code and start playing it with it in your spare time.

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Regardless of our videos and lectures.

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Just make a new class and start creating your own dictionaries.

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Try maybe even to do a triple nested dictionary and try to extract values out of there and try to add

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sales there.

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And this is the only way to learn, practice, practice and practice one more time and also to make

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some manipulations and changes and not always going by the book or by the instructor, but doing things

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by yourself creatively.

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And this is how it goes to your brain.

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And I have like a classic metaphor.

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For example, as you go to way, if you go to a waterfall, never, never mind in what country or where,

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if you go to a waterfall and if you can see if you can find stones under the waterfall, like literally

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where the water falls on, you can see the stones are rounded, OK, and that's not the natural way

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of stones being right.

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Because like usually stones are Shappi and they have corners.

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But where you have a waterfall, the stones are rounded.

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And how is that?

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How is that because water falls on the stones and how it does this effect on the stones.

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And I'll tell you how.

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And this connects to our course directly because even water, when the dripping tip of the ship, if

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they're doing it consistently again and again and again, eventually it can even shape a stone, which

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is really, really hard material.

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So this is my point to you.

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This is my

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this is my idea.

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And trying to tell you that if you practice continuously, the material will sink in your minds and

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eventually you would understand everything perfectly.

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All right.

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So that's about it.

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Guys, we have completed the dictionary part and see you in the next video where we continue data collections.

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Bye bye.