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Hello and welcome.

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In this video, we will talk about the assignments of dictionary, the advanced level, and before that,

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let's have a quick review of the last lectures topics.

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So, first of all, we've studied some complex topic which is nested dictionaries.

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And there we saw basically that we have two types of cells.

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We have a parent cell, which is what we have in a simple dictionary.

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We have a cell in the cell.

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We have key and value.

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And also we have this thing called a child cell or a nested cell.

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And basically what that means is that we have a key on the left side and on the right side.

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Instead of having only a value, a simple one value, we have a nested cell which also contains another

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another key and another value.

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So this is the nested dictionaries that we've been over and we saw examples as well.

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Right after we went to, we started to discuss of manipulations that we can apply upon dictionaries

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and same as we did, unless we saw here, several things were to be that we can do upon a dictionary.

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First of all, we saw how can we extract a value by using the key?

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And we saw a comparison of how we did it.

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Previously on a simple dictionary.

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And also how can we apply it on a nested dictionary?

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All right.

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Right after the extraction of a value using a key we saw or how to create a new dictionary, which is

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a copy of the existing one, how to delete a cell.

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And also, we saw how we can add the new cell to the dictionary and how to remove all elements of the

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dictionary.

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So, all right.

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So once we have this knowledge and we will finish the assignments, I can surely say that you guys dominate

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dictionaries.

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And I have to mention something.

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Dictionaries is a very important topic because you can do a lot of stuff using it because you can do

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endless nested cells inside.

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You can build complete structures of data and you can use it in a lot of ways.

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Whether you are a web developer or your automation developer is a very useful tool.

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By the way, this tool is not a variable in this syntax.

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On Java, for example, on Java, we have arrays and.

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All right, so let's go over the assignments.

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And also, as always, I tell you, first of all, try to resolve them by ourselves, OK?

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All right.

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So let's head over to the segments.

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So first of all, please create a nested dictionary of building attendance.

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The building has three apartments on two floors.

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So first, by the way, I really recommend you before we begin, I really recommend you to use the attachment

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file that is attached to the previous video where you have all the theory.

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So just try to work with it.

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Besides assignment number five, here you have all the material, all the theory that you need to resolve

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these assignments so it can make your lives easier.

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So first of all, once we want to create a nest, the dictionary, first of all, please create a parent

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key, which is floor one and a parent key to a key tool, which is floor to write right after under

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parent key one insert two nested cells.

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First one will be first apartment where Rachel lives.

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Obviously the structure hints us that this is the nested key and this is the nested value.

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All right.

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Uh, reminder again, same as we did in the previous video where we had Joey's kids.

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All right.

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So, all right.

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After we had the second apartment and Jin lives in it, OK, so and under the parent key to insert the

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nest itself of the third apartment where Jack lives.

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All right.

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Right after Brint all nested sale items of the first floor.

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OK.

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So access the first floor and print all the items in it.

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And now the hint.

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How can you drill down into a nested dictionary, uh, by using square brackets for the first level

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and then square brackets again.

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And here inside, you need to put some value add here to put some value.

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Not going to tell you the answer, obviously.

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Just a hint like that.

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And here will be the dictionary.

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So this is how you drill down, same as it did in the previous lecture.

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So please print out all nested cells are all nested cell items of the first floor and right after,

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please print out the resident in the second apartment.

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All right.

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I just want to have the name of the resident that lives in the second apartment.

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Then after we have some changes in the building, the building owner managed to build an additional

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apartment on the second floor.

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So up until now, we had three apartments and now we have a fourth apartment.

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All right.

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So the new resident moved to the new fourth apartment.

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Her name is Carol.

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Add her to the dictionary.

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So basically add a cell to the dictionary and you have the key there.

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And.

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All right, so you have the key there and you have the value.

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And finally, we have, say, assignment number five, which is an advanced we didn't we did study all

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the knowledge that you need in order to resolve it.

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But we didn't see a straightforward example.

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So you need to, uh, you know, to push harder on this assignment.

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So the building owner decided to let his daughter in the first apartment so it would not be leased anymore,

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deleted from the dictionary.

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So this is the lease here represents attendants that are paying for lease and as the daughter of the

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building owner and moves into the apartment.

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So please remove the first apartment out of the dictionary.

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And I also left you and here use the same method that used and the second assignment in order to delete

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the exact value.

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All right.

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Because we learned how to do a simple pop in the previous video.

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All right.

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So in the previous video, we learned something like this.

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But we don't want to put here first floor because then we're going to delete two apartments.

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So think what you need to do in order to drill down into the exact apartment and delete only this one.

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Oh, right.

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So this will be about it, about the assignment's walk through.

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Uh, good luck to you all and see you in the next lecture.