title: How to reference a variable in another file without importing it?
body: <p>If I remember correctly, it's not good coding practice for two files to import each other.</p>
  
  <p>I have file A importing file B.</p>
  
  <p>File B needs to perform an operation using a variable in file A.</p>
  
  <p>The variable in file A can change, and when B performs its operation it needs to use the up-to-date variable in A.</p>
  
  <p>What is the best way to do this?</p>
  
  <p>Edit: I want to access the variable directly - not via a third party</p>