error on testing matplotlib-1.5.2

error

Python 3.5.1 |Anaconda custom (64-bit)| (default, Dec  7 2015, 11:16:01) 
Type "copyright", "credits" or "license" for more information.

IPython 4.2.0 -- An enhanced Interactive Python.
?         -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help      -> Python's own help system.
object?   -> Details about 'object', use 'object??' for extra details.

In [1]: python.el: native completion setup loaded

In [2]: %matplotlib
---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-2-fc39d5fd4eba> in <module>()
----> 1 get_ipython().magic('matplotlib')

/home/nbecker/anaconda3/envs/py35/lib/python3.5/site-packages/IPython/core/interactiveshell.py in magic(self, arg_s)
   2161         magic_name, _, magic_arg_s = arg_s.partition(' ')
   2162         magic_name = magic_name.lstrip(prefilter.ESC_MAGIC)
-> 2163         return self.run_line_magic(magic_name, magic_arg_s)
   2164 
   2165     #-------------------------------------------------------------------------

/home/nbecker/anaconda3/envs/py35/lib/python3.5/site-packages/IPython/core/interactiveshell.py in run_line_magic(self, magic_name, line)
   2082                 kwargs['local_ns'] = sys._getframe(stack_depth).f_locals
   2083             with self.builtin_trap:
-> 2084                 result = fn(*args,**kwargs)
   2085             return result
   2086 

<decorator-gen-106> in matplotlib(self, line)

/home/nbecker/anaconda3/envs/py35/lib/python3.5/site-packages/IPython/core/magic.py in <lambda>(f, *a, **k)
    191     # but it's overkill for just that one bit of state.
    192     def magic_deco(arg):
--> 193         call = lambda f, *a, **k: f(*a, **k)
    194 
    195         if callable(arg):

/home/nbecker/anaconda3/envs/py35/lib/python3.5/site-packages/IPython/core/magics/pylab.py in matplotlib(self, line)
     98             print("Available matplotlib backends: %s" % backends_list)
     99         else:
--> 100             gui, backend = self.shell.enable_matplotlib(args.gui)
    101             self._show_matplotlib_backend(args.gui, backend)
    102 

/home/nbecker/anaconda3/envs/py35/lib/python3.5/site-packages/IPython/core/interactiveshell.py in enable_matplotlib(self, gui)
   2949                 gui, backend = pt.find_gui_and_backend(self.pylab_gui_select)
   2950 
-> 2951         pt.activate_matplotlib(backend)
   2952         pt.configure_inline_support(self, backend)
   2953 

/home/nbecker/anaconda3/envs/py35/lib/python3.5/site-packages/IPython/core/pylabtools.py in activate_matplotlib(backend)
    293     matplotlib.rcParams['backend'] = backend
    294 
--> 295     import matplotlib.pyplot
    296     matplotlib.pyplot.switch_backend(backend)
    297 

/home/nbecker/anaconda3/envs/py35/lib/python3.5/site-packages/matplotlib/pyplot.py in <module>()
    112 
    113 from matplotlib.backends import pylab_setup
--> 114 _backend_mod, new_figure_manager, draw_if_interactive, _show = pylab_setup()
    115 
    116 _IP_REGISTERED = None

/home/nbecker/anaconda3/envs/py35/lib/python3.5/site-packages/matplotlib/backends/__init__.py in pylab_setup()
     30     # imports. 0 means only perform absolute imports.
     31     backend_mod = __import__(backend_name,
---> 32                              globals(),locals(),[backend_name],0)
     33 
     34     # Things we pull in from all backends

/home/nbecker/anaconda3/envs/py35/lib/python3.5/site-packages/matplotlib/backends/backend_qt4agg.py in <module>()
     16 
     17 
---> 18 from .backend_qt5agg import FigureCanvasQTAggBase as _FigureCanvasQTAggBase
     19 
     20 from .backend_agg import FigureCanvasAgg

/home/nbecker/anaconda3/envs/py35/lib/python3.5/site-packages/matplotlib/backends/backend_qt5agg.py in <module>()
     13 
     14 from .backend_agg import FigureCanvasAgg
---> 15 from .backend_qt5 import QtCore
     16 from .backend_qt5 import QtGui
     17 from .backend_qt5 import FigureManagerQT

/home/nbecker/anaconda3/envs/py35/lib/python3.5/site-packages/matplotlib/backends/backend_qt5.py in <module>()
     29     figureoptions = None
     30 
---> 31 from .qt_compat import QtCore, QtGui, QtWidgets, _getSaveFileName, __version__
     32 from matplotlib.backends.qt_editor.formsubplottool import UiSubplotTool
     33 

/home/nbecker/anaconda3/envs/py35/lib/python3.5/site-packages/matplotlib/backends/qt_compat.py in <module>()
    135     # have been changed in the above if block
    136     if QT_API in [QT_API_PYQT, QT_API_PYQTv2]:  # PyQt4 API
--> 137         from PyQt4 import QtCore, QtGui
    138 
    139         try:

ImportError: libicui18n.so.56: cannot open shared object file: No such file or directory

In [3]: