title: How to return a variable using another one Python
body: <p>After working a lot with swift, I got used to the following syntax:</p>
  
  <pre><code>private var __privateVar = 100 // Not accessible from outside the Class
  public var public_var: Int = {
      return __privateVar // Returns __privateVar, and is get-only variable
  }
  </code></pre>
  
  <p>Is there a way to reproduce this in python 3?
  Thanks a lot</p>