python virtualenv scipy导入错误未定义名称

Question

I just started using virtualenv for my existing python project and ran into some trouble...

When I try to import the following

from scipy.sparse.linalg import spsolve

it causes an import error if a virtualenv is activated

Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File ".../lib/python2.7/site-packages/scipy/sparse/linalg/__init__.py", line 110, in <module>
from .dsolve import *
File ".../lib/python2.7/site-packages/scipy/sparse/linalg/dsolve/__init__.py", line 60, in <module>
from .linsolve import *
File ".../lib/python2.7/site-packages/scipy/sparse/linalg/dsolve/linsolve.py", line 10, in <module>
from . import _superlu
ImportError: .../lib/python2.7/site-packages/scipy/sparse/linalg/dsolve/_superlu.so: undefined symbol: dtrsm_

When I use the global site-packages I don't get the error.

Can someone help me?

Answer 1

It appears there's some sort of trouble between numpy-1.10.2 and scipy (see here ). Try the following (it fixed it for me):

(ve) $ pip install numpy==1.10.1
(ve) $ pip install --upgrade --force-reinstall scipy
(ve) $ python
>>> from scipy.sparse.linalg import spsolve