我正在尝试使用import matplotlib.pyplot as plt导入Pylab。但是我在下面收到了一条错误消息。有人有解决方法吗？我正在使用Enthought的发行版，它使用的是IPython 0.12。
In [1]: import matplotlib.pyplot as plt
---------------------------------------------------------------------------
ImportError Traceback (most recent call last)
<ipython-input-1-eff513f636fd> in <module>()
----> 1 import matplotlib.pyplot as plt
/Library/Python/2.7/site-packages/matplotlib/pyplot.py in <module>()
21 from matplotlib.cbook import dedent, silent_list, is_string_like, is_numlike
22 from matplotlib import docstring
---> 23 from matplotlib.figure import Figure, figaspect
24 from matplotlib.backend_bases import FigureCanvasBase
25 from matplotlib.image import imread as _imread
/Library/Python/2.7/site-packages/matplotlib/figure.py in <module>()
16 import artist
17 from artist import Artist, allow_rasterization
---> 18 from axes import Axes, SubplotBase, subplot_class_factory
19 from cbook import flatten, allequal, Stack, iterable, is_string_like
20 import _image
/Library/Python/2.7/site-packages/matplotlib/axes.py in <module>()
12 import matplotlib.artist as martist
13 from matplotlib.artist import allow_rasterization
---> 14 import matplotlib.axis as maxis
15 import matplotlib.cbook as cbook
16 import matplotlib.collections as mcoll
/Library/Python/2.7/site-packages/matplotlib/axis.py in <module>()
8 from matplotlib.artist import allow_rasterization
9 import matplotlib.cbook as cbook
---> 10 import matplotlib.font_manager as font_manager
11 import matplotlib.lines as mlines
12 import matplotlib.patches as mpatches
/Library/Python/2.7/site-packages/matplotlib/font_manager.py in <module>()
50 import matplotlib
51 from matplotlib import afm
---> 52 from matplotlib import ft2font
53 from matplotlib import rcParams, get_configdir
54 from matplotlib.cbook import is_string_like
ImportError: dlopen(/Library/Python/2.7/site-packages/matplotlib/ft2font.so, 2): Library not loaded: /opt/local/lib/libfreetype.6.dylib
Referenced from: /Library/Python/2.7/site-packages/matplotlib/ft2font.so
Reason: image not found
修改：ls -ltr /Library/Python/2.7/site-packages/matplotlib/的输出：
total 19800
-rw-r--r-- 1 root wheel 44538 Sep 24 21:21 widgets.py
-rw-r--r-- 1 root wheel 5035 Sep 24 21:21 units.py
-rw-r--r-- 1 root wheel 11537 Sep 24 21:21 type1font.py
-rw-r--r-- 1 root wheel 77154 Sep 24 21:21 transforms.py
-rw-r--r-- 1 root wheel 7098 Sep 24 21:21 tight_layout.py
-rw-r--r-- 1 root wheel 3839 Sep 24 21:21 tight_bbox.py
-rw-r--r-- 1 root wheel 51195 Sep 24 21:21 ticker.py
-rw-r--r-- 1 root wheel 15516 Sep 24 21:21 textpath.py
-rw-r--r-- 1 root wheel 69526 Sep 24 21:21 text.py
-rw-r--r-- 1 root wheel 22703 Sep 24 21:21 texmanager.py
-rw-r--r-- 1 root wheel 16868 Sep 24 21:21 table.py
-rw-r--r-- 1 root wheel 17723 Sep 24 21:21 spines.py
-rw-r--r-- 1 root wheel 14316 Sep 24 21:21 scale.py
-rw-r--r-- 1 root wheel 40573 Sep 24 21:21 sankey.py
-rw-r--r-- 1 root wheel 25707 Sep 24 21:21 rcsetup.py
-rw-r--r-- 1 root wheel 40599 Sep 24 21:21 quiver.py
-rw-r--r-- 1 root wheel 92531 Sep 24 21:21 pyplot.py
-rw-r--r-- 1 root wheel 143924 Sep 24 21:21 pyparsing.py
-rw-r--r-- 1 root wheel 11742 Sep 24 21:21 pylab.py
-rw-r--r-- 1 root wheel 6826 Sep 24 21:21 patheffects.py
-rw-r--r-- 1 root wheel 24453 Sep 24 21:21 path.py
-rw-r--r-- 1 root wheel 133545 Sep 24 21:21 patches.py
-rw-r--r-- 1 root wheel 50156 Sep 24 21:21 offsetbox.py
-rw-r--r-- 1 root wheel 785 Sep 24 21:21 mpl.py
-rw-r--r-- 1 root wheel 100604 Sep 24 21:21 mlab.py
-rw-r--r-- 1 root wheel 109731 Sep 24 21:21 mathtext.py
-rw-r--r-- 1 root wheel 23594 Sep 24 21:21 markers.py
-rw-r--r-- 1 root wheel 38180 Sep 24 21:21 lines.py
-rw-r--r-- 1 root wheel 20098 Sep 24 21:21 legend_handler.py
-rw-r--r-- 1 root wheel 35251 Sep 24 21:21 legend.py
-rw-r--r-- 1 root wheel 46614 Sep 24 21:21 image.py
-rw-r--r-- 1 root wheel 6564 Sep 24 21:21 hatch.py
-rw-r--r-- 1 root wheel 16092 Sep 24 21:21 gridspec.py
-rw-r--r-- 1 root wheel 6429 Sep 24 21:21 fontconfig_pattern.py
-rw-r--r-- 1 root wheel 43749 Sep 24 21:21 font_manager.py
-rw-r--r-- 1 root wheel 23033 Sep 24 21:21 finance.py
-rw-r--r-- 1 root wheel 50232 Sep 24 21:21 figure.py
-rw-r--r-- 1 root wheel 32575 Sep 24 21:21 dviread.py
-rw-r--r-- 1 root wheel 3769 Sep 24 21:21 docstring.py
-rw-r--r-- 1 root wheel 40070 Sep 24 21:21 dates.py
-rw-r--r-- 1 root wheel 54477 Sep 24 21:21 contour.py
-rw-r--r-- 1 root wheel 2832 Sep 24 21:21 container.py
-rw-r--r-- 1 root wheel 44186 Sep 24 21:21 colors.py
-rw-r--r-- 1 root wheel 34547 Sep 24 21:21 colorbar.py
-rw-r--r-- 1 root wheel 45282 Sep 24 21:21 collections.py
-rw-r--r-- 1 root wheel 9508 Sep 24 21:21 cm.py
-rw-r--r-- 1 root wheel 59573 Sep 24 21:21 cbook.py
-rw-r--r-- 1 root wheel 12895 Sep 24 21:21 blocking_input.py
-rw-r--r-- 1 root wheel 16237 Sep 24 21:21 bezier.py
-rw-r--r-- 1 root wheel 94652 Sep 24 21:21 backend_bases.py
-rw-r--r-- 1 root wheel 72371 Sep 24 21:21 axis.py
-rw-r--r-- 1 root wheel 301792 Sep 24 21:21 axes.py
-rw-r--r-- 1 root wheel 37279 Sep 24 21:21 artist.py
-rw-r--r-- 1 root wheel 19948 Sep 24 21:21 animation.py
-rw-r--r-- 1 root wheel 15422 Sep 24 21:21 afm.py
-rw-r--r-- 1 root wheel 3275 Sep 24 21:21 _pylab_helpers.py
-rw-r--r-- 1 root wheel 89917 Sep 24 21:21 _mathtext_data.py
-rw-r--r-- 1 root wheel 88432 Sep 24 21:21 _cm.py
-rw-r--r-- 1 root wheel 33452 Sep 24 21:21 __init__.py
-rwxr-xr-x 1 root wheel 844488 Sep 24 21:21 ft2font.so
-rwxr-xr-x 1 root wheel 152904 Sep 24 21:21 ttconv.so
-rwxr-xr-x 1 root wheel 53672 Sep 24 21:21 _cntr.so
-rwxr-xr-x 1 root wheel 35020 Sep 24 21:21 nxutils.so
-rwxr-xr-x 1 root wheel 161740 Sep 24 21:21 _delaunay.so
-rwxr-xr-x 1 root wheel 741008 Sep 24 21:21 _path.so
-rwxr-xr-x 1 root wheel 693588 Sep 24 21:21 _tri.so
-rwxr-xr-x 1 scott wheel 828348 Sep 24 21:21 _image.so copy
-rwxr-xr-x 1 root wheel 828348 Sep 24 21:21 _image.so
-rwxr-xr-x 1 root wheel 488096 Sep 24 21:22 _png.so
drwxr-xr-x 7 root wheel 238 Sep 24 21:22 mpl-data
-rw-r--r-- 1 root wheel 44944 Sep 24 21:22 widgets.pyc
-rw-r--r-- 1 root wheel 5808 Sep 24 21:22 units.pyc
-rw-r--r-- 1 root wheel 11090 Sep 24 21:22 type1font.pyc
drwxr-xr-x 12 root wheel 408 Sep 24 21:22 tri
-rw-r--r-- 1 root wheel 91307 Sep 24 21:22 transforms.pyc
-rw-r--r-- 1 root wheel 6061 Sep 24 21:22 tight_layout.pyc
-rw-r--r-- 1 root wheel 4172 Sep 24 21:22 tight_bbox.pyc
-rw-r--r-- 1 root wheel 57906 Sep 24 21:22 ticker.pyc
-rw-r--r-- 1 root wheel 14645 Sep 24 21:22 textpath.pyc
-rw-r--r-- 1 root wheel 67364 Sep 24 21:22 text.pyc
-rw-r--r-- 1 root wheel 19813 Sep 24 21:22 texmanager.pyc
drwxr-xr-x 50 root wheel 1700 Sep 24 21:22 tests
drwxr-xr-x 11 root wheel 374 Sep 24 21:22 testing
-rw-r--r-- 1 root wheel 16758 Sep 24 21:22 table.pyc
-rw-r--r-- 1 root wheel 15471 Sep 24 21:22 spines.pyc
drwxr-xr-x 12 root wheel 408 Sep 24 21:22 sphinxext
-rw-r--r-- 1 root wheel 19505 Sep 24 21:22 scale.pyc
-rw-r--r-- 1 root wheel 26862 Sep 24 21:22 sankey.pyc
-rw-r--r-- 1 root wheel 22428 Sep 24 21:22 rcsetup.pyc
-rw-r--r-- 1 root wheel 35530 Sep 24 21:22 quiver.pyc
-rw-r--r-- 1 root wheel 91567 Sep 24 21:22 pyplot.pyc
-rw-r--r-- 1 root wheel 144868 Sep 24 21:22 pyparsing.pyc
-rw-r--r-- 1 root wheel 13151 Sep 24 21:22 pylab.pyc
drwxr-xr-x 8 root wheel 272 Sep 24 21:22 projections
-rw-r--r-- 1 root wheel 7714 Sep 24 21:22 patheffects.pyc
-rw-r--r-- 1 root wheel 22967 Sep 24 21:22 path.pyc
-rw-r--r-- 1 root wheel 134328 Sep 24 21:22 patches.pyc
-rw-r--r-- 1 root wheel 54567 Sep 24 21:22 offsetbox.pyc
-rw-r--r-- 1 root wheel 1175 Sep 24 21:22 mpl.pyc
-rw-r--r-- 1 root wheel 105969 Sep 24 21:22 mlab.pyc
-rw-r--r-- 1 root wheel 109167 Sep 24 21:22 mathtext.pyc
-rw-r--r-- 1 root wheel 25276 Sep 24 21:22 markers.pyc
-rw-r--r-- 1 root wheel 41185 Sep 24 21:22 lines.pyc
-rw-r--r-- 1 root wheel 18782 Sep 24 21:22 legend_handler.pyc
-rw-r--r-- 1 root wheel 28941 Sep 24 21:22 legend.pyc
-rw-r--r-- 1 root wheel 44466 Sep 24 21:22 image.pyc
-rw-r--r-- 1 root wheel 9038 Sep 24 21:22 hatch.pyc
-rw-r--r-- 1 root wheel 14893 Sep 24 21:22 gridspec.pyc
-rw-r--r-- 1 root wheel 6491 Sep 24 21:22 fontconfig_pattern.pyc
-rw-r--r-- 1 root wheel 40188 Sep 24 21:22 font_manager.pyc
-rw-r--r-- 1 root wheel 19865 Sep 24 21:22 finance.pyc
-rw-r--r-- 1 root wheel 51123 Sep 24 21:22 figure.pyc
-rw-r--r-- 1 root wheel 33935 Sep 24 21:22 dviread.pyc
-rw-r--r-- 1 root wheel 5278 Sep 24 21:22 docstring.pyc
drwxr-xr-x 10 root wheel 340 Sep 24 21:22 delaunay
-rw-r--r-- 1 root wheel 43998 Sep 24 21:22 dates.pyc
-rw-r--r-- 1 root wheel 46848 Sep 24 21:22 contour.pyc
-rw-r--r-- 1 root wheel 4997 Sep 24 21:22 container.pyc
-rw-r--r-- 1 root wheel 43736 Sep 24 21:22 colors.pyc
-rw-r--r-- 1 root wheel 32285 Sep 24 21:22 colorbar.pyc
-rw-r--r-- 1 root wheel 46694 Sep 24 21:22 collections.pyc
-rw-r--r-- 1 root wheel 10966 Sep 24 21:22 cm.pyc
-rw-r--r-- 1 root wheel 71936 Sep 24 21:22 cbook.pyc
-rw-r--r-- 1 root wheel 14396 Sep 24 21:22 blocking_input.pyc
-rw-r--r-- 1 root wheel 14524 Sep 24 21:22 bezier.pyc
drwxr-xr-x 59 root wheel 2006 Sep 24 21:22 backends
-rw-r--r-- 1 root wheel 98700 Sep 24 21:22 backend_bases.pyc
-rw-r--r-- 1 root wheel 68984 Sep 24 21:22 axis.pyc
-rw-r--r-- 1 root wheel 268555 Sep 24 21:22 axes.pyc
-rw-r--r-- 1 root wheel 40988 Sep 24 21:22 artist.pyc
-rw-r--r-- 1 root wheel 15092 Sep 24 21:22 animation.pyc
-rw-r--r-- 1 root wheel 16956 Sep 24 21:22 afm.pyc
-rw-r--r-- 1 root wheel 4467 Sep 24 21:22 _pylab_helpers.pyc
-rw-r--r-- 1 root wheel 64647 Sep 24 21:22 _mathtext_data.pyc
-rw-r--r-- 1 root wheel 81690 Sep 24 21:22 _cm.pyc
-rw-r--r-- 1 root wheel 32767 Sep 24 21:22 __init__.pyc
ls -ltr /opt/local/lib/的输出：
ls: /opt/local/lib/: No such file or directory
答案 0 :(得分：1)
您是从系统Python的site-packages目录（/Library/Python/2.7/site-packages）导入的，而不是EPD的site-packages目录（/Library/Frameworks/Python.framework/Versions/Current/lib /python2.7/site-packages）。
这可能是由于系统site-packages目录中的.pth文件造成的。这些文件导致系统site-packages目录在运行EPD的Python时被添加到PYTHONPATH（查看sys.path确认）删除或以其他方式删除这些文件，您应该能够从EPD附带的matplotlib导入。
答案 1 :(得分：0)
尝试删除字体缓存并重试：
rm -rf ~/.matplotlib/*cache*
或者，您是否能够提供
的输出 ls -ltr /Library/Python/2.7/site-packages/matplotlib/
和
/opt/local/lib/