python matplotlib报错 mac系统，急！！！

Question

各位大神好，
我在spyder中输入import matplotlib.pyplot as plt

结果就报错了：
Traceback (most recent call last):
File "", line 1, in
File "/Users/kevin/anaconda/lib/python2.7/site-packages/spyderlib/widgets/externalshell/sitecustomize.py", line 685, in runfile
execfile(filename, namespace)
File "/Users/kevin/anaconda/lib/python2.7/site-packages/spyderlib/widgets/externalshell/sitecustomize.py", line 78, in execfile
builtins.execfile(filename, *where)
File "/Users/kevin/Desktop/matplot.py", line 8, in
import matplotlib.pyplot as plt
File "/Users/kevin/anaconda/lib/python2.7/site-packages/matplotlib/pyplot.py", line 27, in
import matplotlib.colorbar
File "/Users/kevin/anaconda/lib/python2.7/site-packages/matplotlib/colorbar.py", line 34, in
import matplotlib.collections as collections
File "/Users/kevin/anaconda/lib/python2.7/site-packages/matplotlib/collections.py", line 27, in
import matplotlib.backend_bases as backend_bases
File "/Users/kevin/anaconda/lib/python2.7/site-packages/matplotlib/backend_bases.py", line 56, in
import matplotlib.textpath as textpath
File "/Users/kevin/anaconda/lib/python2.7/site-packages/matplotlib/textpath.py", line 22, in
from matplotlib.mathtext import MathTextParser
File "/Users/kevin/anaconda/lib/python2.7/site-packages/matplotlib/mathtext.py", line 63, in
import matplotlib._png as _png
ImportError: dlopen(/Users/kevin/anaconda/lib/python2.7/site-packages/matplotlib/_png.so, 2): Library not loaded: @loader_path/../../../libpng15.15.dylib
Referenced from: /Users/kevin/anaconda/lib/python2.7/site-packages/matplotlib/_png.so
Reason: image not found

好像是libpng15.15.dylib没安装？求问这是什么？具体怎么操作？
我用的OSX，anaconda

多谢！！

－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－
日了，直接重新换了个解释器，解决了！

Answer 1

execfile(filename, namespace)
看样子是少文件或者环境变量没有配置好。