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The slide show you learn about sets and dictionaries.

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Remember these are top elsewhere referred to as sequences.

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Well sets and dictionaries are referred to as collections because they are unordered collections of

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items.

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Let's start explaining sets.

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So this is not a collection of unique items and remember unique items not duplicate items a lot in a

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set.

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We can create a site using curly brackets just like this.

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They say faltered and I'll say all three integers in my set.

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Simple and practical use offsets.

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Now is when you have a visa that has duplicate items and you want to remove removals duplicate items

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from it.

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Let's say you have the least file these.

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We have two duplicate items and two Omega sequence of unique elements.

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You have to convert it to a set object.

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We can't convert a lease to a said object using the said function.

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When you do that duplicate will be removed automatically.

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So we are sort of updating our file of this variable with the new value in this line of code.

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This new value will be a set that is generated by converting those least objects to a set object.

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So you know printing the file is Wheler reveal that duplicate items have been removed and we now have

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a set object not a list anymore.

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That is because we converted our solutions to a set but don't believe me hunch.

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The type of the object always.

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So if you want to retain your data type you can convert the set back to a list using the list function

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this time.

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So file this equals list and we pass the said object to the list function more data types.

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Now dictionaries.

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Well let's try to explain them by making a comparison with this.

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So in the case of this we were able to access items using indexes for dictionaries we can access items

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using indexes clear explicitly by us.

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Here is a dictionary called my dictionary file dict.

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We use curly brackets to define a dictionary and there were either index or column the corresponding

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item.

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So don't forget that each item has its own data type so if you use quotes for an item that matches that

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particular item a string and so on the items in this case are 2015 2017.

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In 2019 they are referred to as the values so remember values.

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Why are we talking about dictionaries.

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Indexes are.

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Last year this year and next year they are referred to as keys.

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So what we are doing here is an object constructed by pairs of keys and values.

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Now in the case of we sent up also we were able to access items using the default indexes.

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In the case of dictionaries you can access the dictionary values using the corresponding keys that will

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return a value attached to the U key.