title: ImportError: No module named ImageFont
body: <p>I'm using the chemlab library for the first time. I'm trying to run some of the example programs but I keep getting the following error message:</p>
  <blockquote>
  <p>import ImageFont  # From PIL</p>
  <p>ImportError: No module named ImageFont</p>
  </blockquote>
  <p>Here is the code to one of the basic examples (<a href="https://github.com/chemlab/chemlab/blob/master/examples/nacl.py" rel="nofollow noreferrer">https://github.com/chemlab/chemlab/blob/master/examples/nacl.py</a>):</p>
  <pre><code>from chemlab.core import Atom, Molecule, crystal
  from chemlab.graphics import display_system
  
  # Molecule templates
  na = Molecule([Atom('Na', [0.0, 0.0, 0.0])])
  cl = Molecule([Atom('Cl', [0.0, 0.0, 0.0])])
  
  s = crystal([[0.0, 0.0, 0.0], [0.5, 0.5, 0.5]], # Fractional Positions
              [na, cl], # Molecules
              225, # Space Group
              cellpar = [.54, .54, .54, 90, 90, 90], # unit cell parameters
              repetitions = [5, 5, 5]) # unit cell repetitions in each direction
  
  display_system(s)
  </code></pre>
  <p>I've tried installing ImageFont, PIL and Pillow via pip (Pillow was the only one that actually installed) but no luck.</p>