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And let's do some exercises to practice on
what you have seen in this section and also

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combined with the last
section. So we are going to

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practice mostly on functions
here, okay? And you

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will have four different
exercises. So the first

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three exercises are
actually the same as for the

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last section, but this
time you are going to use

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functions, okay? So the
functionalities that you

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have previously implemented
in the Python shell,

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you are going to write code
inside PyCharm. So what

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you can do is you can
create a new file for each

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program. So I'm going to
show you how to do that.

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Okay, very quickly how
you can create a new file

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for each exercise so you
can better organize your

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code. So you are still
in your project here. You

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can right click new
Python file, okay? And just

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name your file. So for
example, test, okay? This

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is a Python file. I press
enter and you have a new

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test.py. So make sure
you have the py extension

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here. So now you have
main.py, test.py. I'm just

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going to write print hello
from test, okay? Press

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Ctrl+S or Command+S to
save the file. And now what

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you can do, so you can
click on run here. And by

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default it's going to run
the main, okay? As you

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can see here, it's going
to run main.py. If you

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want to run test.py,
you can click on run with

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dot, dot, dot. And you
can choose the file test

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here. And it's going to
run test. So you can see

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hello from test. And then
you can choose here, you

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can toggle between main
and test. So if you click

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on main, it's going to
run the main file. Test is

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going to run test file. So
you can create different

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files and you can toggle
here. Make sure you add

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them with the run dot,
dot, dot here. All right.

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And if you want to
remove a file, simply right

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click, delete. Are you
sure? Okay. And so you can

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add one file per
exercise, okay? So the first

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exercise you are going
to ask for the name and

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age of the user and
print the info. This actually

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is what we have done to
explain the functions here.

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So this is already done,
but as an additional

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practice, you can just
start with a blank page

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and rewrite that function, okay? As a first
practice. And then, so ask the user for two

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integer numbers, add
them and print them with the

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result. So you can create
here a function to add

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two numbers and return
the value. And then you

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can print the result.
And for the third one,

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create a list of four float
numbers, compute the

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average and print it.
You can create a function

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here that is going to
compute the average of any

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list of numbers. Okay?
So you're going to call

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this function and print
the result. So those are

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the three first exercises.
And then the fourth one

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is a new exercise. You
are going to create a

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function to convert
from Celsius degrees to

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Fahrenheit degrees.
Okay? You have the formula

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here. So you have Celsius
degrees. You need to

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multiply Celsius by 1.8
and add 32 to get Fahrenheit

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degrees. Okay. So for
each of those exercises,

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one of the challenges
also will be how you can

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name the function, okay?
Naming the function is

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very important to give
a meaningful name. And

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then how you are going
to organize the code

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to make it work. All
right. So now if you still

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have some trouble
understanding some concepts,

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please go back to the
previous lessons to watch

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them again. And I will see you in the next
video for the solution of the exercises.