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Alright, so let's go through two
solutions to the no spam challenge I

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talked about, in the previous video. So
how did you get on with it? Did you have

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fun solving the challenge? Now your
solution may be different to mine. What's

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important is that you got the correct
items printed out. Alright, so I'm gonna

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start with a solution that removes the
spam from each of the inner lists.

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And we saw code how to do that, in earlier videos.
So starting down here, on line 12.

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We're going to create a for loop that
iterates over the menu, and that'll give

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us each of the inner lists in turn. So I'm
gonna type for meal in menu: Now inside

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this loop, we're going to use another for
loop to process each meal. So I'm going

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to type for space index in range left
parenthesis len, left parenthesis meal,

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right parentheses minus 1 comma minus 1 comma
minus 1, right parenthesis and a colon.

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Now we want to remove items from the list, so
we have to work backwards through the

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list, and that's why we've done the for
loop like that. Next we test to see if we

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found spam, and delete it, if we have. So
on this, line 14, I'm going to type if meal,

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left square bracket index right
square bracket, is equal to, two equal

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signs, spam in double quotes colon. Then
on line 15, del meal with index in left

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and right square brackets. So now that
we've done that, when the inner loop

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terminates we should have a list with no
spam. So let's print that out, in the

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outer loop. We'll do that on line 17, so
we'll come back here,

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and it needs to be the same level as the
for loop on line 13, print parentheses meal.

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Now if we put the print inside the
inner loop, your list will be printed

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each time around. We only want to print
it after we've finished removing spam from the list.

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Alright, so let's run the program
and check that there are eight meals and

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that none of them contain spam, and you
can see the output confirms that's the case.

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Now the output uses the default
string representation of a list.

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That means that each meal is enclosed in
square brackets. Now that

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may not be what you want. I'm going to
show you a way to deal with that, in the

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next video. For now though, that's one solution.

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What I'm going to do is comment out that code, then
create another loop to use the second approach.

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So I'll start with for meal in menu,
like we did before, colon

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Now, we're not going to mutate the list, this
time. That means we can work forwards

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through the meals. So I'm going to type
for item in meal:

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The next line, if item is not equal to
exclamation mark and equal sign,

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spam in double quotes colon. Then we're going
to print parentheses item. Then line 23,

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I'm going to go back to the same level
as the for loop on line 20, and type

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print left and right parentheses only. Alright,
so there's the code for the second

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approach. So we run it now. So you can see
here, we've got similar output.

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Eight meals, all without spam. So if your
solution produced the correct results,

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then well done. The items for each meal
are on a separate line here, though,

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which isn't ideal. We'll see how to fix that,
in the next few videos.