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You have completed Practice Basic Math Calculations in Python!
You have completed Practice Basic Math Calculations in Python!
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How was it?
0:00
Were you amazed at how soon you'll
hit one of these milestones?
0:01
I know a couple caught me off guard.
0:03
Let's see how I broke this one down.
0:06
First, I got to get that name.
0:07
That's simple enough.
0:09
Just ask for their name and
start on the variable.
0:10
We've all done that.
0:13
So getting the year they were
born could be a bit trickier.
0:15
We have to make sure
they gave us a number.
0:19
Now, I'm going to use a while loop, and
0:21
then I will have a try and
accept inside of it.
0:24
Now there is probably a more clever way to
solve this especially using something like
0:27
strings is numeric method.
0:31
But I don't mind doing things that
a bit more spelled out like this.
0:33
It definitely shows you
exactly what is going on.
0:36
So now that I have the year they were
born, I can figure out how old they are.
0:39
I am going to do that by setting
the current year to a variable.
0:43
Now that does mean I'm going to have
to update the script next year,
0:47
but whatever, that's fine.
0:50
By then, I'll probably know
a better way of doing this.
0:52
Right now when I'm recording this,
it is the year 2017.
0:55
So that is what I am going to put for
current year.
0:58
If you're watching this in the future,
hi, and I hope things turned out well.
1:00
Then to get their age,
1:04
roughly, I'm going to subtract their
birth year from the current year.
1:06
This doesn't really account for their
birthday if it's passed yet or not, but
1:10
it's close enough for what we are doing.
1:15
Now I have to figure out when they
are going to turn a particular age.
1:17
To do that I can take whatever age
it is that I want to know when they
1:21
are going to turn.
1:26
I can subtract form
that their current age.
1:27
And again, there is probably
a more clever way of doing this.
1:31
But then I'm going to add
it to the current year.
1:34
So to figure out when somebody
if going to turn 25 for example,
1:38
I take 25 minus their current age and
then I add that to the current year.
1:41
So, if they were say 30, this is going
to give me negative 5 which means
1:45
that current year is
going to be before 2017.
1:50
And we're going to use
that in just a minute.
1:54
So I have all the dates that I need.
1:56
Now I just need to print things out.
1:58
I'll use an if to make sure that each
year is greater than the current year.
2:00
And if it is, then I'll print
out the message to the user.
2:05
So here's what that looks like.
2:08
If turn 25 is greater than current year,
print out something.
2:10
Turn 50, so on and so forth.
2:13
It's time to try this one out.
2:16
So we'll do python age_calc.py.
2:17
You can call me Kenneth.
2:20
And I was born in 1981.
2:24
So there we go.
2:25
I didn't get the 25
because I'm past that one.
2:27
But I still got 50, 75, and 100.
2:31
Nice.
I hope you liked this
2:34
bit of extra practice.
2:35
Be sure to fill out the feedback survey
about these kinds of practices and
2:37
let us know what else you'd
like to practice in the future.
2:40
If you have ideas for
other types of practice, be sure and
2:42
let us know about those, too.
2:45
Thanks and I'll see you next time.
2:46
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