title: Can't Change Jetbrains Pycharm python interpreter from 3.6 to 2.7
body: <p>I'm using pycharm community edition for learning. and I need to change the project interpreter to 2.7. I have linux ubuntu 18.04 and I downloaded and installed python 2.7.15, but I just can't find the interpreter. Can anyone help with finding it? thanks.</p>