title: Program CodeRunner doesn't show anything in console when returning values
body: <p>I'm using the Mac program CodeRunner to test some Python code.
  However, when I return values through functions, the console does not show these values.</p>
  
  <p>ex:</p>
  
  <pre><code>def square(x):
      return x**2
  </code></pre>
  
  <p>Normally evaluating square(2) would result in the console displaying 4. However, nothing appears in CodeRunner.  Is this a flaw in the program or is there something I'm missing?</p>