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-: Let me show you another useful function that we'll use

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just like range.

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Mind you, it's not as common as range.

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Range, you'll see it a lot in Python code

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but this other one is still very useful

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and it's called enumerate.

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Now what does it do?

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Let's have a look.

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I can do a for loop and I'll say for

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and we'll say character in enumerate.

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and then enumerate, we wrap around something

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that, well, we wanna enumerate.

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So let's see what that means.

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It returns an enumerate object.

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So iterable must be an other object that supports iteration

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so we have to give it something that enumerate

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can iterate over.

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So this time around

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let's just do a, a string that says hello.

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Now enumerate is special because what it's going to

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give us is, it's going to take an iterable object

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and gives you an index counter and the item at that index.

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What do I mean by that?

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Well, you can actually say i, character.

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So we're unpacking this and we're saying, hey

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print i and character.

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If I click run, look at that

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I get hello iterated over.

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Again, if we don't have enumerate

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then we would have just gotten hello.

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But we also, because we use enumerate, we get

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this i or index of each item and where it is in the index.

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So that if I had a list here

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let's say 1, 2, 3.

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Again, I'm able to use and access the index number

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of the item as well.

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What if we had a couple?

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Again, we get the index number.

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So enumerate is very useful if you need the index counter

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of the item that you're looping through.

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So let's do a little exercise.

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Let's say that we wanna create a script

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that enumerates a list

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of numbers 1 through 10.

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So we'll use range to create that.

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I'm going to say list, and then I'm going to say range.

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I know there's a lot of functions here.

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Range that is 100.

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Actually, let's do that.

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And I want to be told what the index

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of the number 50 is.

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So pause the video if you need to do that.

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Now here, I want it so that,

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let me make this a little bit bigger.

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I want it so that we only print the index

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of, let's say, the value 50.

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I wanna know where 50 is in the list.

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Now again, this is a simple example

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so you can probably already guess what the answer is

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but how would you code this so

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that only in here we get the index of 50.

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Or it says the index of 50 is whatever.

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Pause the video if you want to give it a go,

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otherwise, let's try this.

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I'm going to do a conditional that says

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if character is equal to 50,

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then I'm going to print index

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or I'm going to do an f string, and I'll say

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that the index of 50 is,

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and then I'll add the index in here

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so that if I run,

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I get index of 50 is 50.

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And just to confirm, if for example

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I just print here and let's say print i and character

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I click run, we see that, yep

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we have the indexes the same as the numbers.

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Again, not too difficult of a question, but you

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see here that we're able to extract this information.

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Again, not as useful as range

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but you will see it occasionally in code,

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so I wanted to make sure that you're not surprised by it.

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As you can see, it's not that difficult.