在 32 位 Windows 7 机器上的 Python 3.5 中安装 scipy

Question

I have been trying to install Scipy onto my Python 3.5 (32-bit) install on my Windows 7 machine using the pre-built binaries from: http://www.lfd.uci.edu/~gohlke/pythonlibs

I have, in order, installed the following libraries

numpy‑1.10.1+mkl‑cp35‑none‑win32.whl
scipy‑0.16.1‑cp35‑none‑win32.whl

Then, when trying to use the installed packages I get the following erros

from scipy import sparse
< ... Complete error trace ommitted ... >
packages\scipy\sparse\csr.py", line 13, in <module>
    from ._sparsetools import csr_tocsc, csr_tobsr, csr_count_blocks, \
ImportError: DLL load failed: The specified module could not be found.

However, if i follow the same process for Python 3.4 replacing the installers with:

numpy‑1.10.1+mkl‑cp35‑none‑win32.whl
scipy‑0.16.1‑cp35‑none‑win32.whl

Everything seems to work. Are there additional dependencies or install packages that I am missing for the Python 3.5 install?

Answer 1

Make sure you pay attention to this line from the link you provided:

Many binaries depend on NumPy-1.9+MKL and the Microsoft Visual C++ 2008 (x64, x86, and SP1 for CPython 2.6 and 2.7), Visual C++ 2010 (x64, x86, for CPython 3.3 and 3.4), or the Visual C++ 2015 (x64 and x86 for CPython 3.5) redistributable packages.

Download the corresponding Microsoft Visual C++ Redistributable Package which should be this one based on your description.

I had a similar problem, can't recall the exact issue, and I download the one for my system and it worked fine. Let me know otherwise.

Answer 2

Possibly helpful: trying to pip install scipy-0.18.0rc2-cp35-cp35m-win_amd64.whl (downloaded from http://www.lfd.uci.edu/~gohlke/pythonlibs/ ) on 64-bit windows 7 with Python 3.5 failed with a "file does not exist/not a valid wheel filename" error.

From various hints obtained from here and elsewhere I found that renaming the file to: scipy-0.16.1-cp35-none-win_amd64.whl allowed it to install.

Answer 3

Pull up the command window (search for it in the start button), then enter

pip install numpy

and

pip install scipy‑0.16.1‑cp35‑none‑win32.whl

then it should let you know in the command window if it was successfully downloaded, if you have python 3.5.

Answer 4

I had a question that turned out to be a duplicate of this one here:

ImportError: DLL load failed: when importing statsmodels

I actually solved this and other issues related to installing packages (such as statsmodels) by using Anaconda installer for Python 3.5.