我在mac os 10.6.8上更新了matplotlib版本 matplotlib在wxpython应用程序中工作，但在简单命令模式下使用时，我遇到与png库和动态查找相关的以下导入错误
Python 2.7.1 |EPD 7.0-2 (32-bit)| (r271:86832, Dec 3 2010, 15:41:32)
[GCC 4.0.1 (Apple Inc. build 5488)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> matplotlib.__version__
u'1.4.x'
>>> import matplotlib.pylab
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/Library/Frameworks/Python.framework/Versions/7.0/lib/python2.7/site-packages/matplotlib- 1.4.x-py2.7-macosx-10.5-i386.egg/matplotlib/pylab.py", line 230, in <module>
import matplotlib.finance
File "/Library/Frameworks/Python.framework/Versions/7.0/lib/python2.7/site-packages/matplotlib- 1.4.x-py2.7-macosx-10.5-i386.egg/matplotlib/finance.py", line 38, in <module>
from matplotlib.collections import LineCollection, PolyCollection
File "/Library/Frameworks/Python.framework/Versions/7.0/lib/python2.7/site-packages/matplotlib-1.4.x-py2.7-macosx-10.5-i386.egg/matplotlib/collections.py", line 27, in <module>
import matplotlib.backend_bases as backend_bases
File "/Library/Frameworks/Python.framework/Versions/7.0/lib/python2.7/site-packages/matplotlib-1.4.x-py2.7-macosx-10.5-i386.egg/matplotlib/backend_bases.py", line 56, in <module>
import matplotlib.textpath as textpath
File "/Library/Frameworks/Python.framework/Versions/7.0/lib/python2.7/site-packages/matplotlib-1.4.x-py2.7-macosx-10.5-i386.egg/matplotlib/textpath.py", line 22, in <module>
from matplotlib.mathtext import MathTextParser
File "/Library/Frameworks/Python.framework/Versions/7.0/lib/python2.7/site-packages/matplotlib-1.4.x-py2.7-macosx-10.5-i386.egg/matplotlib/mathtext.py", line 64, in <module>
import matplotlib._png as _png
ImportError: dlopen(/Library/Frameworks/Python.framework/Versions/7.0/lib/python2.7/site- packages/matplotlib-1.4.x-py2.7-macosx-10.5-i386.egg/matplotlib/_png.so, 2): Symbol not found: _png_create_info_struct
Referenced from: /Library/Frameworks/Python.framework/Versions/7.0/lib/python2.7/site-packages/matplotlib-1.4.x-py2.7-macosx-10.5-i386.egg/matplotlib/_png.so
Expected in: dynamic lookup
matplotlib重建提供了以下内容
REQUIRED DEPENDENCIES AND EXTENSIONS
numpy: yes [version 1.9.0.dev-192355e]
six: yes [using six version 1.4.1]
dateutil: yes [using dateutil version 1.5]
tornado: yes [using tornado version 3.2]
pyparsing: yes [using pyparsing version 2.0.1]
pycxx: yes [Couldn't import. Using local copy.]
libagg: yes [pkg-config information for 'libagg' could not
be found. Using local copy.]
freetype: yes [version 13.2.7]
png: yes [pkg-config information for 'libpng' could not
be found. Using unknown version.]
qhull: yes [pkg-config information for 'qhull' could not be
found. Using local copy.]
OPTIONAL SUBPACKAGES
sample_data: yes [installing]
toolkits: yes [installing]
tests: yes [using nose version 1.0.0 / using mock 1.0.1]
OPTIONAL BACKEND EXTENSIONS
macosx: yes [installing, darwin]
qt4agg: no [PyQt4 not found]
gtk3agg: no [Requires pygobject to be installed.]
gtk3cairo: no [Requires cairocffi or pycairo to be installed.]
gtkagg: no [Requires pygtk]
tkagg: yes [installing, version 81008]
wxagg: yes [installing, version 2.8.10.1]
gtk: no [Requires pygtk]
agg: yes [installing]
cairo: no [cairocffi or pycairo not found]
windowing: no [Microsoft Windows only]
OPTIONAL LATEX DEPENDENCIES
dvipng: yes [version 1.14]
ghostscript: yes [version 9.05]
latex: yes [version 3.1415926]
pdftops: no
谢谢大家的帮助