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How was it?

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Were you amazed at how soon you'll
hit one of these milestones?

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I know a couple caught me off guard.

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Let's see how I broke this one down.

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First, I got to get that name.

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That's simple enough.

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Just ask for their name and
start on the variable.

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We've all done that.

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So getting the year they were
born could be a bit trickier.

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We have to make sure
they gave us a number.

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Now, I'm going to use a while loop, and

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then I will have a try and
accept inside of it.

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Now there is probably a more clever way to
solve this especially using something like

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strings is numeric method.

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But I don't mind doing things that
a bit more spelled out like this.

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It definitely shows you
exactly what is going on.

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So now that I have the year they were
born, I can figure out how old they are.

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I am going to do that by setting
the current year to a variable.

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Now that does mean I'm going to have
to update the script next year,

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but whatever, that's fine.

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By then, I'll probably know
a better way of doing this.

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Right now when I'm recording this,
it is the year 2017.

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So that is what I am going to put for
current year.

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If you're watching this in the future,
hi, and I hope things turned out well.

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Then to get their age,

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roughly, I'm going to subtract their
birth year from the current year.

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This doesn't really account for their
birthday if it's passed yet or not, but

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it's close enough for what we are doing.

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Now I have to figure out when they
are going to turn a particular age.

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To do that I can take whatever age
it is that I want to know when they

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are going to turn.

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I can subtract form
that their current age.

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And again, there is probably
a more clever way of doing this.

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But then I'm going to add
it to the current year.

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So to figure out when somebody
if going to turn 25 for example,

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I take 25 minus their current age and
then I add that to the current year.

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So, if they were say 30, this is going
to give me negative 5 which means

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that current year is
going to be before 2017.

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And we're going to use
that in just a minute.

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So I have all the dates that I need.

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Now I just need to print things out.

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I'll use an if to make sure that each
year is greater than the current year.

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And if it is, then I'll print
out the message to the user.

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So here's what that looks like.

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If turn 25 is greater than current year,
print out something.

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Turn 50, so on and so forth.

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It's time to try this one out.

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So we'll do python age_calc.py.

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You can call me Kenneth.

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And I was born in 1981.

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So there we go.

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I didn't get the 25
because I'm past that one.

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But I still got 50, 75, and 100.

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Nice.
I hope you liked this

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bit of extra practice.

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Be sure to fill out the feedback survey
about these kinds of practices and

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let us know what else you'd
like to practice in the future.

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If you have ideas for
other types of practice, be sure and

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let us know about those, too.

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Thanks and I'll see you next time.