Question

此问题与此处的问题有关：Unable to import numpy

我跑了：sudo pip install --upgrade numpy

然后当我运行python并尝试导入numpy时我得到了这个奇怪的错误！我疯了！

>>> import numpy
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/numpy/__init__.py", line 153, in <module>
    from . import add_newdocs
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/numpy/add_newdocs.py", line 13, in <module>
    from numpy.lib import add_newdoc
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/numpy/lib/__init__.py", line 18, in <module>
    from .polynomial import *
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/numpy/lib/polynomial.py", line 19, in <module>
    from numpy.linalg import eigvals, lstsq, inv
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/numpy/linalg/__init__.py", line 50, in <module>
    from .linalg import *
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/numpy/linalg/linalg.py", line 29, in <module>
    from numpy.linalg import lapack_lite, _umath_linalg
ImportError: dlopen(/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/numpy/linalg/lapack_lite.so, 2): Symbol not found: __gfortran_compare_string
  Referenced from: /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/numpy/linalg/lapack_lite.so
  Expected in: flat namespace
 in /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/numpy/linalg/lapack_lite.so
>>>

编辑：我也跑了这个：

$ pip show numpy
---
Name: numpy
Version: 1.8.0
Location: /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages
Requires:

Answer 1

我的修复方法是通过macports手动安装gcc：

sudo port install gcc48

...安装gfortran，但没有numpy似乎期待的别名（gfortran）。然后我们创建一个符号链接：

sudo ln -s /opt/local/bin/gfortran-mp-4.8 /opt/local/bin/gfortran

之后，我通过pip卸载并重新安装了numpy，它就像一个魅力。

这为我昨晚的小牛队解决了这个问题。根据我的阅读，gfortran曾经是OS X命令行工具的一部分，但不是Lion的左右。单独安装gcc“修复”那个。

使用pip升级后导入numpy时出错

1 个答案: