导入 matplotlib 时 numpy 的版本错误

When I

import matplotlib

我没有收到任何错误，但是当我

import matplotlib.pyplot

I get

RuntimeError: module compiled against API version 8 but this version of numpy is 7
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Library/Python/2.7/site-packages/matplotlib/pyplot.py", line 24, in <module>
    import matplotlib.colorbar
  File "/Library/Python/2.7/site-packages/matplotlib/colorbar.py", line 27, in <module>
    import matplotlib.artist as martist
  File "/Library/Python/2.7/site-packages/matplotlib/artist.py", line 8, in <module>
    from transforms import Bbox, IdentityTransform, TransformedBbox, \
  File "/Library/Python/2.7/site-packages/matplotlib/transforms.py", line 35, in <module>
    from matplotlib._path import (affine_transform, count_bboxes_overlapping_bbox,
ImportError: numpy.core.multiarray failed to import

这看起来像一个版本错误 https://stackoverflow.com/q/15282046/656912; but yolk说我有最新版本，并且pip说一切都是最新的，并不能帮助“真正”更新东西。

我可以做什么来确保必要的软件包“真正”是最新的以避免此错误；哪些软件包需要“真正”更新（matplotlib；numpy；其他？）。

卸载并重新安装 numpy （使用 pip）没有帮助。

pip 是否以某种方式让我最近将 matplotlib 更新为“太新”的版本，而 numpy 的 pip 版本滞后？

My sys.path is:

['',
'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python27.zip', 
'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7',  
'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin',  
'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac',  
'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages',  
'/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python',  
'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk',  
'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-old',  
'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload',  
'/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/PyObjC', 
'/Library/Python/2.7/site-packages']

Scypi 堆栈安装在site-packages它由 pip 维护。 OS X 10.9、Apple Python 2.7.5，所有软件包版本都是通过 pip 在 PyPi 存储库中找到的版本。

在这种情况下，强制重新安装是有效的，就像在类似情况下经常发生的那样：

sudo pip install -U --force-reinstall scipy