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Alright, so for the first challenge solution, we're going to use the conditional expression that gives

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the results we want for each of the values from 1 to 30.

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Now the line I'm about to type is a bit long, but bear with me as we start with it anyway.

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So I'm going to start with fizzbuzz equals, left and right square brackets, double quotes fizz buzz if x modulus 

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operator 15, two equal signs because it's equal to zero, else double quotes fizz, if x modulus three equal equal zero, else buzz double quotes,

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if x modulus 5 equals zero, else str x for x in range parentheses, one comma 31.

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So that line really is a bit long, and we should really split it up to stay consistent with PEP guidelines.

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If we have a look over to the right hand corner here, or right hand side rather, PEP 8 line too long, 125

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greater than 120 characters, so probably make sense to split it about there.

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And that makes it a bit more readable.

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Right so then we'll print on the next line, fizzbuzz.

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Now here before I actually run this, you might be wondering why I'm using the function string instead

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of just printing x, because we're printing the results and we won't be doing any further processing, which means

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that either would do here.

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But remember that a list comprehension produces a list and the lists are intended to be homogenous,

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in other words, they're intended to store items of the same type.

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Now that's not enforced by Python, and you can mix all sorts of types in a list and sometimes you will

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want to do that, but it can cause problems if you're not careful when you come to use the list.

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So let's actually run this just to confirm now that it does work,

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and you can see in the list there the results.

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It looks pretty good to me, it looks like it's working nicely.

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All the fifteens, threes and fives have got fizz, buzz or fizzbuzz, and we've got the numbers for the rest of them. OK.

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Now you'll often want to process the list in some way,

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so we'll use the centre method of strings now to display the results a bit differently.

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So what I'm going to do is comment out this initial for loop here, the one that you already had before the challenge,

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and instead what I'm going to do on line 21, is type for buzz in fizzbuzz, colon print parentheses buzz dot

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centre, parentheses 12 comma space two single quotes and the asterix.

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And if we run that,

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you can see now we've got the results printing out in a width of 12, padded by asterisks on each side. It makes

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it a bit easier to actually review the output, to make sure that it's working correctly.

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Now by the way,

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the reason I'm showing you that is because that works fine, only because we made sure that all 

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items in the list are of the same type - a string.

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Now if we didn't do that we'd get an error.

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So if we change the else over here, from string x to x, and run this again,

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we actually get an error.

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That's because ints of course don't have a centre function.

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It is a slightly contrived example.

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The point though, is you may want to do things with the items in your lists, and it's a lot easier if

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all items are the same type in that list.

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Now I'm not saying by any means that you should never mix types in a list.

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If it wasn't a useful thing to do,

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Python probably wouldn't let you do it. But if you can keep your lists homogenous, then you'll get fewer problems

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when you come to use them for things that you hadn't originally planned to use them for.

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Alright so let's close that run window down, and what I'll do is I'll undo those changes, and what I might do is actually

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end the video

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here now, because you've got Challenge 1 completed successfully. In the next video,

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what we're going to do is start tackling Challenge 2 - this one here. So I'll

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see you in the next video.