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我在Mac OS X 10.5上安装了ActivePython 2.7。主要原因是使用包管理器pypm。但是，在安装ActivePython并设置我的.bash_profile文件以使用该版本的Python之后，我遇到了许多与pypm-installed库有关的问题。要安装所有这些模块，我只需键入从PyQt4导入QtGui时出现图像错误
pypm install <package-name>
，这是我得到了matplotlib，PyQt4的，PIL等的问题是，所有的这些似乎安装，没有任何问题，他们将正确的。 pth和.so文件放入正确的site-packages文件夹，基本导入工作正常。但我得到以下错误。
首先，这里是我看到我的机器上的Python检查时：
new-host:site-packages ely$ which python
/usr/local/bin/python
new-host:site-packages ely$ ls -l /usr/local/bin/python
lrwxr-xr-x 1 root wheel 60 May 25 22:15 /usr/local/bin/python -> /Library/Frameworks/Python.framework/Versions/2.7/bin/python
接下来，我调用Python和尝试导入的东西。
new-host:site-packages ely$ python
ActivePython 2.7.1.4 (ActiveState Software Inc.) based on
Python 2.7.1 (r271:86832, Feb 7 2011, 11:33:10)
[GCC 4.2.1 (Apple Inc. build 5664)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import PyQt4
>>> from PyQt4 import QtGui
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: dlopen(PyQt4/QtGui.so, 2): Library not loaded: QtGui.framework/Versions/4/QtGui
Referenced from: /Users/ely/Library/Python/2.7/lib/python/site-packages/PyQt4/QtGui.so
Reason: image not found
所以上面显示，PyQt4的进口没有投诉，但当时我得到错误“未找到图像”当我尝试使用任何的子模块。再举一个例子，这里是标准的matplotlib。
>>> import matplotlib
>>> import matplotlib.pyplot as plt
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "matplotlib/pyplot.py", line 23, in <module>
from matplotlib.figure import Figure, figaspect
File "matplotlib/figure.py", line 16, in <module>
import artist
File "matplotlib/artist.py", line 6, in <module>
from transforms import Bbox, IdentityTransform, TransformedBbox, TransformedPath
File "matplotlib/transforms.py", line 34, in <module>
from matplotlib._path import affine_transform
ImportError: dlopen(matplotlib/_path.so, 2): Symbol not found: __ZSt16__ostream_insertIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_PKS3_l
Referenced from: /Users/ely/Library/Python/2.7/lib/python/site-packages/matplotlib/_path.so
Expected in: dynamic lookup
>>> from matplotlib import pyplot
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "matplotlib/pyplot.py", line 23, in <module>
from matplotlib.figure import Figure, figaspect
File "matplotlib/figure.py", line 16, in <module>
import artist
File "matplotlib/artist.py", line 6, in <module>
from transforms import Bbox, IdentityTransform, TransformedBbox, TransformedPath
File "matplotlib/transforms.py", line 34, in <module>
from matplotlib._path import affine_transform
ImportError: dlopen(matplotlib/_path.so, 2): Symbol not found: __ZSt16__ostream_insertIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_PKS3_l
Referenced from: /Users/ely/Library/Python/2.7/lib/python/site-packages/matplotlib/_path.so
Expected in: dynamic lookup
有关为什么pypm-installed版本如此有问题的任何想法？我在Ubuntu工作计算机上使用了ActivePython和pypm很长一段时间，从来没有遇到任何这些问题。我用pypm安装的所有东西都很精美。为什么它在Mac上如此不同？