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Now it's time to put what you've learned into practice and to actually learn

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through doing. So if you go to Repl.it where you are going to go to day 26.1 List

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Comprehension, and you're going to complete this challenge. So pause the video,

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head over there,

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read the instructions and see if you can complete the challenge.

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Once you're done, head back over here and I'll go through the solution with you.

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All right. So in this case,

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what we're trying to do is we're taking this list of numbers and we're basically

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going to write a single line of code here to change it

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so that we end up with a new list where each number is squared.

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A square number is basically just the number multiplied by itself.

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So for example, four squared is sixteen, two squared is four,

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three squared is nine. So let's go ahead and create our new list

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which it needs to be called squared numbers,

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because that's what we're going to print out.

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And that's what the automated testing is going to be looking for.

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This new list is going to be created using a list comprehension,

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so we're going to use our keyword method,

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new_item for item in list.

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And in this case, we actually don't need to do any conditional checking.

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We're taking every single one of these items,

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so this is the keyword that we need to fill in. The list,

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in this case, is our list of numbers. Each of the items,

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we can call it anything we want, but I'm going to call it num.

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And this new item is going to be num,

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so each of the items in that list, multiplied by itself.

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You can either do it like this which will get you the output that you need.

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Alternatively, you can use Python's built in exponents,

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which is just num**2.

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And this will square that number, which will give you exactly the same results.

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Now, you're ready to head over to the next lesson where we've got 

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another list comprehension exercise.