虽然这个问题以前曾经提过，但是没有得到解答。我在安装完EPD的Canopy后，遇到了以下导入错误：
IPython 2.1.0 -- 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.
[TerminalIPythonApp] WARNING | Eventloop or matplotlib integration failed. Is matplotlib installed?
---------------------------------------------------------------------------
ImportError Traceback (most recent call last)
/home/rhys/Documents/Uni_work/Year_2_research_placement/User/lib/python2.7/site-packages/IPython/core/shellapp.pyc in <lambda>(key)
231 shell = self.shell
232 if self.pylab:
--> 233 enable = lambda key: shell.enable_pylab(key, import_all=self.pylab_import_all)
234 key = self.pylab
235 elif self.matplotlib:
/home/rhys/Documents/Uni_work/Year_2_research_placement/User/lib/python2.7/site-packages/IPython/core/interactiveshell.pyc in enable_pylab(self, gui, import_all, welcome_message)
2980 from IPython.core.pylabtools import import_pylab
2981
-> 2982 gui, backend = self.enable_matplotlib(gui)
2983
2984 # We want to prevent the loading of pylab to pollute the user's
/home/rhys/Documents/Uni_work/Year_2_research_placement/User/lib/python2.7/site-packages/IPython/core/interactiveshell.pyc in enable_matplotlib(self, gui)
2941 gui, backend = pt.find_gui_and_backend(self.pylab_gui_select)
2942
-> 2943 pt.activate_matplotlib(backend)
2944 pt.configure_inline_support(self, backend)
2945
/home/rhys/Documents/Uni_work/Year_2_research_placement/User/lib/python2.7/site-packages/IPython/core/pylabtools.pyc in activate_matplotlib(backend)
285 matplotlib.rcParams['backend'] = backend
286
--> 287 import matplotlib.pyplot
288 matplotlib.pyplot.switch_backend(backend)
289
/home/rhys/Documents/Uni_work/Year_2_research_placement/User/lib/python2.7/site-packages/matplotlib/pyplot.py in <module>()
22
23 import matplotlib
---> 24 import matplotlib.colorbar
25 from matplotlib import _pylab_helpers, interactive
26 from matplotlib.cbook import dedent, silent_list, is_string_like, is_numlike
/home/rhys/Documents/Uni_work/Year_2_research_placement/User/lib/python2.7/site-packages/matplotlib/colorbar.py in <module>()
27 import matplotlib.artist as martist
28 import matplotlib.cbook as cbook
---> 29 import matplotlib.collections as collections
30 import matplotlib.colors as colors
31 import matplotlib.contour as contour
/home/rhys/Documents/Uni_work/Year_2_research_placement/User/lib/python2.7/site-packages/matplotlib/collections.py in <module>()
21 import matplotlib.artist as artist
22 from matplotlib.artist import allow_rasterization
---> 23 import matplotlib.backend_bases as backend_bases
24 import matplotlib.path as mpath
25 from matplotlib import _path
/home/rhys/Documents/Uni_work/Year_2_research_placement/User/lib/python2.7/site-packages/matplotlib/backend_bases.py in <module>()
48
49 import matplotlib.tight_bbox as tight_bbox
---> 50 import matplotlib.textpath as textpath
51 from matplotlib.path import Path
52 from matplotlib.cbook import mplDeprecation
/home/rhys/Documents/Uni_work/Year_2_research_placement/User/lib/python2.7/site-packages/matplotlib/textpath.py in <module>()
9 from matplotlib.path import Path
10 from matplotlib import rcParams
---> 11 import matplotlib.font_manager as font_manager
12 from matplotlib.ft2font import FT2Font, KERNING_DEFAULT, LOAD_NO_HINTING
13 from matplotlib.ft2font import LOAD_TARGET_LIGHT
/home/rhys/Documents/Uni_work/Year_2_research_placement/User/lib/python2.7/site-packages/matplotlib/font_manager.py in <module>()
51 import matplotlib
52 from matplotlib import afm
---> 53 from matplotlib import ft2font
54 from matplotlib import rcParams, get_cachedir
55 from matplotlib.cbook import is_string_like
ImportError: libpng16.so.16: cannot open shared object file: No such file or directory
我已经尝试重新安装matplotlib，但仍出现错误，并且我找不到\usr\local\lib中的libpng16.so.16文件，有人能帮忙吗？