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And here are the exercises
for the level 4 of this course.

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So I'm going to give
you here two exercises.

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The first one, you're going
to compute the Max value

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inside a list of numbers
that you read from a file.

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So the thing is that computing the
Max value from a list of numbers,

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you actually have done that before
and you have a function for that.

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So what you can do is you
can use the function you have

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created before and actually
put it inside a Python module.

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Okay, so we already have
the my computations module.

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You can put this function in that
module and then use it in your code.

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And also one thing to
pay attention to is the data

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type you are going to get
when you read from a file.

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This is a string, so make
sure to cast it accordingly.

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And the second exercise is to
read a list of cities from a file,

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order them alphabetically
and write them to another file.

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So here you can
download the city list, okay,

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as an additional
resource of the course.

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So download the list, put it
somewhere in your computer

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and then use either the
relative or the absolute path.

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What I'm going to do is simply
to put the file in the same directory

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as the Python file I'm
going to write the code into.

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And to sort the list alphabetically,
well, you don't need to invent,

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well, you don't need to invent a complex
algorithm or write a lot of lines of code.

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You can simply use the
built-in sorted function

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which simply takes one parameter
which is the list you want to sort.

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And this is going to
return the sorted list.

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All right, so take the
time to do the exercises.

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If needed, come back to the
previous lessons and watch them again.

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And then I will see you in
the next lesson for the solution.