title: How can I store a PIN number in a encoded algorithm? PYTHON3
body: <p>I'm currently teaching myself how to code in Python3. I'm doing this by doing various exercises etc. Basically, I have a program where the user will log-in to the program by having a unique PIN number. In this task, I have been asked to extend my program by doing the following: </p>
  
  <p>"Create an encoding algorithm that will store the PIN in a format that cannot be read by just looking t the file. Only by running the PIN attempt through the same algorithm can the match be found."</p>
  
  <p>What exactly does this mean? As I'm new to Python, I'm not fully sure what is being asked. Could someone point me in the right way, and how I would approach this question? </p>