ImportError: /usr/lib/liblapack.so.3: undefined symbol: ATL_chemv

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在ubuntu下使用numpy出现如下问题：

zhangxin@seele:~/github/caffe$ python
Python 2.7.6 (default, Oct 26 2016, 20:30:19) 
[GCC 4.8.4] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import numpy
Traceback (most recent call last):File "<stdin>", line 1, in <module>File "/usr/lib/python2.7/dist-packages/numpy/__init__.py", line 153, in <module>from . import add_newdocsFile "/usr/lib/python2.7/dist-packages/numpy/add_newdocs.py", line 13, in <module>from numpy.lib import add_newdocFile "/usr/lib/python2.7/dist-packages/numpy/lib/__init__.py", line 18, in <module>from .polynomial import *File "/usr/lib/python2.7/dist-packages/numpy/lib/polynomial.py", line 19, in <module>from numpy.linalg import eigvals, lstsq, invFile "/usr/lib/python2.7/dist-packages/numpy/linalg/__init__.py", line 50, in <module>from .linalg import *File "/usr/lib/python2.7/dist-packages/numpy/linalg/linalg.py", line 29, in <module>from numpy.linalg import lapack_lite, _umath_linalg
ImportError: /usr/lib/liblapack.so.3: undefined symbol: ATL_chemv

解决方法：

This issue arises when you have libopenblas-base and libatlas3-base installed, but don't have liblapack3 installed. This combination of packages installs conflicting versions of libblas.so (from OpenBLAS) and liblapack.so (from ATLAS).Solution 1 (my favorite): You can keep both OpenBLAS and ATLAS on your machine if you also install liblapack3.sudo apt-get install liblapack3Solution 2: Uninstall ATLAS (this will actually install liblapack3 for you automatically because of some deb package shenanigans)sudo apt-get uninstall libatlas3-baseSolution 3: Uninstall OpenBLASsudo apt-get uninstall libopenblas-base

参考资料：
Installing lapack for numpy

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