title: Google CloudFunctions: ContextVar vs Global Var
body: <p>Is there a difference between ContextVar and Global Var within Google Cloud Functions?</p>
  <p>I noticed that as Google tries to re-use GCF instances some global vars classes are reused from one GCF invocation to another and not init at the start of each GCF invocation. I need each of those global var classes to be unique for each GCF invocation.</p>
  <p>Are ContextVars unique for each GCF invocation?</p>
  <p>Currently I assign those global vars to None and re-init afterwards to ensure fresh init of each class</p>