title: Can I prevent modifying an object in Python?
body: <p>I want to control global variables (or globally scoped variables) in a way that they are set only once in program initialization code, and lock them after that. </p>
  
  <p>I use UPPER_CASE_VARIABLES for global variables, but I want to have a sure way not to change the variable anyway. </p>
  
  <ul>
  <li>Does python provide that (or similar) feature?</li>
  <li>How do you control the globally scoped variables? </li>
  </ul>