title: How To Set Sources For Jupyter Notebooks
body: <p>I've just bought a new computer, and can't remember/don't know how I had Jupyter notebooks set up on my old machine. Specifically, how do you tell Jupyter about sources.<br>
  If I have a conda environment called django, and I do <code>source activate django</code> followed by <code>jupyter notebook</code>, I end up with a notebook, but then when I do <code>from django.http import HttpResponse</code> I get the error message</p>
  
  <pre><code>ModuleNotFoundError: No module named 'django'
  </code></pre>
  
  <p>Which is bizarre (I think), because Django is definitely installed in the Django environment. </p>
  
  <p>How do I set up my Jupyter notebooks so that they know about the various sources that I want them to know about?</p>