title: Installing python packages doesn't work on mac
body: <p>I use a Macbook pro with <strong>10.15.1 Catalina</strong>. I run Python 3.5 and use <strong>Pycharm</strong> as my IDE.</p>
  
  <p>I had some experience with <strong>Pycharm</strong> and python on my windows PC a year ago and wanted to work on some old projects, but I have no idea what to do.</p>
  
  <p>I tried to install different packages on my Mac, but it doesn't work.
  I used:
      pip install 
  it didn't work,</p>
  
  <pre><code>pip3 install &lt;package name&gt;
  </code></pre>
  
  <p>it at least tried to install something, but only said, that the versions are not satisfying...,</p>
  
  <pre><code>brew install &lt;pacakge name&gt;
  </code></pre>
  
  <p>that said, it would work, but as I tried to use it, <strong>Pycharm</strong> (the IDE I use) wanted to install it again. Sometimes it worked and sometimes it did not and now it won't work at all...
  And every time I want to use pyqt5 in a different project <strong>Pycharm</strong> wants to install it again and can't find it...</p>
  
  <p>I do not know what to do and looked around to find someone with the same problem, but have no idea what the solution to my problem is.</p>