instance of our SimpleApp class and call the launch method. Assuming you name this file &#8220;simple_sine_example.py&#8221; you can launch this app from the command line with:</p>
<div class="highlight-python"><div class="highlight"><pre>$ python simple_sine_example.py
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<p>The output will indicate where the app is being served (<a class="reference external" href="http://127.0.0.1:8080">http://127.0.0.1:8080</a> by default)</p>
<p>If all goes smoothly your spyre app should look like this: