~azzar1/unity/add-show-desktop-key

<div class="helpfile">

<p>You can <strong>run</strong> Python code directly from the IVLE File

Browser to try it out. You can also <strong>serve</strong> Python web

applications and other files publicly.</p>

<h2>Running</h2>

<p>In the IVLE Editor, you can create Python scripts (<strong>.py</strong>

files), which contain working programs. Often, simple programs work by

printing things out (with the <strong>print</strong> statement), and reading

input from the user (with the <strong>raw_input</strong> function).</p>

<p>You can run these programs by selecting the <strong>.py</strong> file in

the File Browser, and clicking <strong>run</strong>. This will open up the

Python console and display the output of the program, just as if you had typed

the program into the console yourself.</p>

<p>For example, the following simple Python program prints a message:</p>

<pre>print "Hello, world!"</pre>

<h2>Serving</h2>

<p>IVLE also allows you to create web pages or web applications to show to

your friends. In the IVLE Editor, you can create HTML web pages

(<strong>.html</strong> files). For example, the following page contains a

message:</p>

<pre>&lt;html&gt;&lt;body&gt;&lt;p&gt;Hello, world!&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</pre>

<p>You can ask IVLE to serve such a file as a web page by selecting the

<strong>.html</strong> file in the File Browser, and clicking

<strong>serve</strong>. This will open a new tab with the web page.</p>

<p>You can also run a Python file as a web application in the same way. In

IVLE, we use CGI to write web applications in Python, which are a little

different from a normal Python script. If you serve the above script, you will

see a warning, explaining that you didn't use CGI properly. An example of a

simple CGI script follows:</p>

<pre>print "Content-Type: text/html"

print

print "&lt;html&gt;&lt;body&gt;&lt;p&gt;Hello, world!&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;"</pre>

<h2>Publishing</h2>

<p>If you wish to show your web pages and applications to the world, first,

select nothing and choose <strong>publish</strong> from the "More actions"

menu. This will <em>publish</em> the directory and all files in it to the

web.</p>

<p>Then, select the file, and choose <strong>share this file</strong> from the

"More actions" menu. This will open the file in a new tab, just like

<strong>serve</strong>, except the address bar will show a "public" URL. If

you give this URL to someone else (e.g., as a link in an email), they will be

able to view your content.</p>

<h2>Summary</h2>

<ul>

<li><strong>Run</strong> runs Python programs as command-line applications.</li>

<li><strong>Serve</strong> runs Python programs as CGI applications, showing their web output.</li>

<li><strong>Publish</strong> lets other people view your web pages and CGI applications as if they were <strong>served</strong>.</li>

</ul>

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