title: PyCharm error: [Errno 13] Permission denied
body: <p>I am using PyCharm for executing my Python programs. Today, I had tried updating all the packages using Project Interpreter. I received the following error in the process:</p>
  <blockquote>
  <p>error: [Errno 13] Permission denied</p>
  </blockquote>
  <p><a href="https://i.stack.imgur.com/8OWlz.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/8OWlz.png" alt="enter image description here" /></a></p>
  <p>After which none of my Python libraries are shown in Project Interpreter list.</p>
  <p>I am using PyCharm Community Edition 2016.2.3 in Mac OS X 10.11.6.</p>