numpy.distutils.system_info.BlasNotFoundError:
Blas (http://www.netlib.org/blas/) libraries not found.
Directories to search for the libraries can be specified in the
numpy/distutils/site.cfg file (section [blas]) or by setting
the BLAS environment variable.
Which tar do I need to download off this site?
I've tried the fortrans, but I keep getting this error (after setting the environment variable obviously).
If you need to use the latest versions of SciPy rather than the packaged version, without going through the hassle of building BLAS and LAPACK, you can follow the below procedure.
Install linear algebra libraries from repository (for Ubuntu),
sudo apt-get install gfortran libopenblas-dev liblapack-dev
Then install SciPy, (after downloading the SciPy source): python setup.py install or
pip install scipy
As the case may be.
Try using
sudo apt-get install python3-scipy
I guess you are talking about installation in Ubuntu. Just use:
apt-get install python-numpy python-scipy
That should take care of the BLAS libraries compiling as well. Else, compiling the BLAS libraries is very difficult.
On Fedora, this works:
yum install lapack lapack-devel blas blas-devel
pip install numpy
pip install scipy
Remember to install 'lapack-devel' and 'blas-devel' in addition to 'blas' and 'lapack' otherwise you'll get the error you mentioned or the "numpy.distutils.system_info.LapackNotFoundError" error.
Following the instructions given by 'cfi' works for me, although there are a few pieces they left out that you might need:
1) Your lapack directory, after unzipping, may be called lapack-X-Y (some version number), so you can just rename that to LAPACK.
cd ~/src
mv lapack-[tab] LAPACK
2) In that directory, you may need to do:
cd ~/src/LAPACK
cp lapack_LINUX.a libflapack.a
For Windows users there is a nice binary package by Chris (warning: it's a pretty large download, 191 MB):
Source: Stackoverflow.com