bjc-r/cur/programming/python/finding_a_bar.html at 28482e4fd32bd8c5c9d40015d8d600c28e0630be · cs10/bjc-r · GitHub

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<!DOCTYPE html>
<html>
    <head>
            <script src="/bjc-r/llab/loader.js"></script>
        <title>Finding a Bar</title>
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    <body>
        <p>
            Now it's time to seriously write some code. Start by right clicking on this <a href="/bjc-r/prog/python/virus.py">link</a> and select save as. Make sure to save this file to the PythonLab1 directory that we made earlier. Head back to the shell and enter the <code>ls</code> command to make sure that the file made it into our PythonLab1 directory.
        </p>
        <p><pre><code>
Alonzos-MacBook:PythonLab1 alonzo$$ ls
virus.py
        </code></pre></p>
        <p>
            First, take a look inside the <code>virus.py</code> file. We will be editing the python file in something called a text editor (guess what a text editor does...). There are many text editors available, (NotePad++, Emacs, Xcode, TextMate, etc.) but in this lab we'll be using SublimeText 3. If you're working on a lab computer, you can find Sublime in the Applications folder. Otherwise, any text editor (not Microsoft Word!) will do.
        </p>
        <p class="alert quoteOrange">
            Open up Sublime and then open virus.py. Make sure to read the comments at the top of the file and then take a brief glance at the code, but don't worry about it too much for right now. Also, make sure to set the variable called <code>your_name</code> just below the comments. For example, <code>your_name = "Alonzo"</code> (make sure your name is inside quotes as this is how Python designates text).
        </p>
        <p>
            Head back to the shell and you can try running this file by entering <code>python3 virus.py</code> as shown below:
        </p>
        <p><pre><code>
Alonzos-MacBook:PythonLab1 alonzo$$ python3 virus.py
        </code></pre></p>
        <p>
            Next try running the first exercise by entering <code>python3 virus.py first_even_nums 5</code> (if it's working this should print the first 5 even numbers, starting with the number 2):
        </p>
        <p><pre><code>
Alonzos-MacBook:PythonLab1 alonzo$$ python3 virus.py first_even_nums 5
2
4
6
8
        </code></pre></p>
        <p>
            Uh oh...it looks like we've only printed the first 4 even numbers. Head back to Sublime and edit the function called <code>first_even_nums</code> so that we get the correct behavior:
        </p>
                <p><pre><code>
Alonzos-MacBook:PythonLab1 alonzo$$ python3 virus.py first_even_nums 5
2
4
6
8
10
        </code></pre></p>
        <p class="alert quoteGreen">
            On the next page you'll learn how to define functions of your own!
        </p>
    </body>
</html>