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Solution
3:01Review one possible solution for the dunder main challenge.
A final hello to you all.
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Let's take a look at one possible
solution to this challenge.
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In alphabet.py here,
I took this example word_list and
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I moved it down inside of Dunder main,
so that I could use it to test my code.
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I then created a function that I
called first_alpha where I pass in
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the list as a parameter called words.
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And I use the min function to return
the first word alphabetically.
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Now, if you didn't know already, letters
were kind of like numbers in Python.
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So for example,
a B would be greater than an A,
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a D would be greater than a C and so on.
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And I can actually show you that
here inside of the Python console.
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So, if I do B > A, I get it's gonna give
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'B' not defined sorry, "b" > "a".
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And you see I get True.
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So, we can use that to our advantage and
use the minimum function Python
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has built in min function to return
the first word alphabetically.
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So, if I run python3 alphabet.py,
you can see I get bird,
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I'm passing in the word_list
to my function.
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And it's finding the minimum of that list,
which is the word "bird",
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which is the one we were looking for.
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Now, if you used for loops and conditional
statements instead, that's awesome.
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There are so many ways to tackle
challenges in programming, and
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just because my answer is different
than yours, doesn't make it wrong.
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With all that complete,
let's move over into app.py.
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Here I imported the alphabet file and
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then uncommented these two
lines down here at the bottom.
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I also wrapped them in print statements,
because as you can see in my function,
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I chose to do return instead of print.
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So, in order to see
the response in the console,
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I will then have to print out
what my function returns.
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So, from this first word_list,
we should still get bird.
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And then from our last_names list we
should get my last name "Amendola".
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So, if I run python3,
now we do app.py, we get bird,
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and Amendola,
we get the correct responses.
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And you notice, I don't see bird,
printed out to the console twice,
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because I correctly used our
dunder main to practice and
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test out my function
inside of alphabet.py.
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But it doesn't run when I run my script.
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Perfect, nice work Pythonistas.
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As a further challenge if you have another
small Python project, I encourage you to
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try breaking the project up into multiple
files and practice using Dunder main.
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Keep up the awesome work.
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