title: More specific explanation to solve the issues with matplotlib in Python (macos)
body: <p>I know that the answer was very promising answered in 
  <a href="https://stackoverflow.com/questions/21784641/installation-issue-with-matplotlib-python">here</a>. But I seem to fail to follow the instructions, at least I still get an error in my notebook.</p>
  
  <p>In my terminal, I first use </p>
  
  <p><code>cd ~/.matplotlib</code></p>
  
  <p>Then it says I need to create a new file named matplotlibrc, so I run</p>
  
  <p><code>touch matplotlibrc</code>.</p>
  
  <p>To add the code <code>backend: TkAgg</code> I run</p>
  
  <p><code>echo "backend: TkAgg"</code></p>
  
  <p>After doing that, I still get the very same error message.</p>
  
  <p>First Question: Is my code correct? If yes, my second question is if anybody knows a different solution to the problem.</p>