title: How to flush interpreters list cache?
body: <p>I initialized a virtualenv with a python 2.7 interpreter, and then selected it as the interpreter in VSCode.</p>
  
  <p>I then changed the virtualenv interpreter to python 3.7, and the VSCode interpreter list does not reflects the change: it still shows the virtualenv interpreter as being python 2.7.</p>
  
  <p>How can I force the cached interpreter list to be updated or flushed?</p>
  
  <p>This is related to this <a href="https://github.com/Microsoft/vscode-python/issues/666" rel="noreferrer">issue</a>.</p>