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- [Instructor] In this self check exercise

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I'd like you to use the techniques

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that I just demonstrated to
you in the preceding video

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to show the top three
trending topics for today

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in the United States.

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And for that purpose
you'll use this WOEID.

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So go ahead and give that a shot

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then come back to see the answer.

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Okay let's start revealing
the answer to this exercise.

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So first up we want to
acquire the U.S. trends

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so again this is going to be a list

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containing one dictionary
for the United States

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which has the WOEID that you see here.

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So we'll go ahead and grab that.

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And you might have noticed
there was a little delay there

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while that executed to get us the results.

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We want to acquire from that dictionary

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the trends list for the United States

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so we go into element zero of the list

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that was returned back here

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then we access that
dictionary's trends key

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which gives us back the
trends that we need.

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And once again we're going
to filter those tweets

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by tweet volume

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and we're going to sort
them in descending order

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by only those tweets that
have the value 10,000 or more.

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So again this value will be none

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if it's fewer than 10,000 tweets

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anything with 10,000 tweets or more

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will have an actual tweet count.

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So we'll first filter out
anything that doesn't have

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or filter out anything
that does have none in it

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so we have only trends
with 10,000 tweets or more

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then we'll go ahead and sort those

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once again by that tweet
volume key in reverse order.

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So that will give us the list
in the format that we need

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and then finally we wanted
to show just the top three

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trends for the United States today

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so we'll go ahead and execute this loop

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which accesses a slice of the U.S. list

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and as you can see we have
today's top three topics

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as of right now when I'm
performing this video recording

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for the United States.

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And if you execute this code
again on a different day

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when you're watching the video,

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you'll get whatever the
current trending topics are

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and if you do it at multiple
times during the day

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it is possible based on
the virality of the trends

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that the order of these will change

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or that the topics themselves
will change as well.