title: Setting pythonpath on Jupyter notebook
body: <p>I want to add a permanent <code>PYTHONPATH</code> using <code>Jupyter Notebook</code> to be able to access the data from a particular directory or folder. I have read that we could use <code>JUPYTER_PATH</code> for it.</p>
  
  <p>Could someone tell me a step wise instruction on how to do it. I am new to it and the documentation was not very clear.</p>
  
  <p>For example sake lets say my path is as follows:
  <code>C:\ENG\Fin_trade\ION</code></p>