title: IDE doesn't recognize conftest.py as a python file
body: <p>I have a python project with tests and a conftest file, and a few days ago - out of nowhere - Pycharm decided that it's not a python script:</p>
  <p><a href="https://i.stack.imgur.com/gQ8XH.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/gQ8XH.png" alt="enter image description here" /></a></p>
  <p>The result is that I can't debug it, can't jump to source, don't have inspection and ext'.</p>
  <p>Moreover - If I change the name to something different, all of the sudden it's a python script again:</p>
  <p><a href="https://i.stack.imgur.com/zv7kq.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/zv7kq.png" alt="enter image description here" /></a></p>
  <p>Why is this happening? Can anyone tell? I searched the settings for mentions of <code>conftest</code> and found nothing. How do I fix this?</p>