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In an earlier video in this section, we
had an example of a while loop in

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adventure.py. So if we open that file
in the editor, if you haven't already

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done so, let's review the problem we had.
So if we run the program now, and type

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quit to a break out of the loop, we get
the output Game over which is what we

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want, but the program also prints aren't
you glad you got out of there, as well. So

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we don't really want to print that
message if the player quits out of the

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game. Now you should be able to see that
fixing that problem is going to be

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pretty easy. If we break out of the while
loop, else can be used to prevent that

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message from happening. So all we really
need to do is add an else here on line

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10 : enter, and making sure that the
print is now indented. So the code in the

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else block will now only be executed if
the loop terminates normally. It won't be

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executed if we break out of the loop. So
let's run the program to test that. Let's

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start off by entering up and the loop
goes round again. If we enter quit at

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this point, we break out of the loop and
you can see we've got the message Game

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over but not the message on line 11. We
should also test what happens when the

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loop terminates normally so let's run
the program again, and this time we're

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going to enter a direction - I'm gonna
enter east - and now, you can see, we've

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got the message aren't you glad you got
out of there showing, which is correct.

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Now there are other ways to achieve the
same thing. You don't have to use else

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with a loop, but it can be useful and you
will see it being used in code out there.

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Alright so that's actually the end of
this section. In the next section, we're

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going to look at some data structures
that are built into Python. Before that

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though, I want to finish this section
with a brief summary and a challenge.

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So I'll see you in the next video.