title: Identifying a complex number
body: <p>I am creating a calculator application for all types of mathematical algorithms. However, I want to identify if a root is complex and then have an exception for it.
  I came up with this:</p>
  
  <pre><code>if x == complex():
      print("Error 05: Complex Root")
  </code></pre>
  
  <p>However, nothing is identified or printed when I run the app, knowing that <code>x</code> is a complex root.</p>