Recently, I wrote an article about “installation and use of Microsoft open source distributed high performance GB framework lightgbm”. Some partners encountered problems when installing Python environment. I personally tried to install it, and I really encountered a lot of problems“ After the problem of “installing the SciPy Library of Python under Windows 7” was solved, we encountered “importerror: cannot import name numpy”_ MKL. As follows:

[plain]

view plain

copy

D:\LightGBM\LightGBM\examples\python-guide> pythonsimple_ example.py

Traceback(mostrecentcalllast):

File”simple_ example.py”,line4,in< module>

importlightgbmaslgb

File”D:\Python27\lib\site-packages\lightgbm-0.1-py2.7.egg\lightgbm\__ init__. p

y”,line9,in< module>

from.basicimportDataset,Booster

File”D:\Python27\lib\site-packages\lightgbm-0.1-py2.7.egg\lightgbm\basic.py”,

line15,in< module>

importscipy.sparse

File”D:\Python27\lib\site-packages\scipy\__ init__. py”,line61,in< module>

fromnumpy._ distributor_ initimportNUMPY_ MKL#requiresnumpy+mkl

ImportE rror:cannotimportnameNUMPY_ MKL

Why is there such a problem

Reference“ http://stackoverflow.com/questions/37267399/importerror-cannot-import-name-numpy-mkl ”What I’m saying is

Because my “SciPy” is installed with “. WHL” file according to the method in “installation of Python’s SciPy Library under Windows 7”, and “numpy” is installed with “PIP install numpy” command

In fact, I used the “PIP install numpy” command to install. In fact, I downloaded a “. WHL” file, which is different from the download source of “SciPy”, but it doesn’t work

What to do?What to do

Unload numpy with the command “PIP install numpy” and MKL with the command “PIP install MKL”

Using the same source as “SciPy”, from“ http://www.lfd.uci.edu/~gohlke/pythonlibs/ ”Download the installation file of “numpy” (find the corresponding version)

Then use the command to install: PIP installnumpy {1.14.2 + MKL} cp35} cp35m} win_ AMD64. WHL

The problem is solved

Similar Posts:

• [Solved] “import numpy as np” ImportError: No module named numpy
• Solution for oserror: [errno 1] operation not permitted encountered when installing tensorflow
• numpy.distutils.system_info.NotFoundError: no lapack/blas resources found problem solved
• [Solved] Importerror: DLL load failed while importing mtrand: the specified program could not be found.
• Pythonmodule ‘scipy.misc’ has no attribute ‘xxx’
• [Solved] pip Install Error: is not a supported wheel on this platform
• [Solved] pytorchImportError: numpy.core.multiarray failed to import
• Solve the problem of Attributeerror: module ‘SciPy. Misc’ has no attribute ‘imread’
• Pycharm introduces numpy error: ImportError: Importing the multiarray numpy extension module failed. Most likely you are trying to import a failed build of numpy.
• Mac OS uses pip to install pandas prompt cannot install ‘numpy’ solution