title: Importing matplotlib does not work
body: <p>In my terminal window, i open the ipython enviroment, and then type in <code>import matplotlib.pyplot as plt</code>. The error message I get from doing this is:</p>
  
  <pre><code>ImportError                               Traceback (most recent call last)
  &lt;ipython-input-1-eff513f636fd&gt; in &lt;module&gt;()
  ----&gt; 1 import matplotlib.pyplot as plt
  
  /Users/arazipinhas/anaconda/lib/python2.7/site-packages/matplotlib/pyplot.py in &lt;module&gt;()
       25 
       26 import matplotlib
  ---&gt; 27 import matplotlib.colorbar
       28 from matplotlib import style
       29 from matplotlib import _pylab_helpers, interactive
  
  /Users/arazipinhas/anaconda/lib/python2.7/site-packages/matplotlib/colorbar.py in &lt;module&gt;()
       32 import matplotlib.artist as martist
       33 import matplotlib.cbook as cbook
  ---&gt; 34 import matplotlib.collections as collections
       35 import matplotlib.colors as colors
       36 import matplotlib.contour as contour
  
  /Users/arazipinhas/anaconda/lib/python2.7/site-packages/matplotlib/collections.py in &lt;module&gt;()
       25 import matplotlib.artist as artist
       26 from matplotlib.artist import allow_rasterization
  ---&gt; 27 import matplotlib.backend_bases as backend_bases
       28 import matplotlib.path as mpath
       29 from matplotlib import _path
  
  /Users/arazipinhas/anaconda/lib/python2.7/site-packages/matplotlib/backend_bases.py in &lt;module&gt;()
       54 
       55 import matplotlib.tight_bbox as tight_bbox
  ---&gt; 56 import matplotlib.textpath as textpath
       57 from matplotlib.path import Path
       58 from matplotlib.cbook import mplDeprecation
  
  /Users/arazipinhas/anaconda/lib/python2.7/site-packages/matplotlib/textpath.py in &lt;module&gt;()
       20 from matplotlib.ft2font import FT2Font, KERNING_DEFAULT, LOAD_NO_HINTING
       21 from matplotlib.ft2font import LOAD_TARGET_LIGHT
  ---&gt; 22 from matplotlib.mathtext import MathTextParser
       23 import matplotlib.dviread as dviread
       24 from matplotlib.font_manager import FontProperties
  
  /Users/arazipinhas/anaconda/lib/python2.7/site-packages/matplotlib/mathtext.py in &lt;module&gt;()
       61 
       62 import matplotlib.colors as mcolors
  ---&gt; 63 import matplotlib._png as _png
       64 ####################
       65 
  
  ImportError: dlopen(/Users/arazipinhas/anaconda/lib/python2.7/site-packages/matplotlib/_png.so, 2): Library not loaded: @loader_path/../../../libpng15.15.dylib
    Referenced from: /Users/arazipinhas/anaconda/lib/python2.7/site-packages/matplotlib/_png.so
    Reason: image not found
  </code></pre>
  
  <p>I would truly appreciate a way to resolve this issue. All I want to do is get on with my physics, and all this constant computational setback is quite cumbersome and annoying. I should thus appreciate an expedited response from anyone who may be willing to assist. </p>