ImportError numpy core multiarray failed to import

Question

I m trying to run this program import cv2 import time  cv NamedWindow  quot camera quot   1   capture   cv CaptureFromCAM 0   while True      img   cv QueryFrame capture      cv ShowImage  quot camera quot   img      if cv WaitKey 10     27          break cv DestroyAllWindows    But I m having a problem with numpy  I m using pyschopy along with opencv  The problem I keep getting is this error report   RuntimeError  module compiled against API version 7 but this version of numpy is 6 Traceback  most recent call last   File  quot C  Users John Documents EyeTracking Programs GetImage py quot   line 1  in  import cv2  ImportError  numpy core multiarray failed to import  I have numpy-1 6 1-py2 7 in the psychopy folder  I m just confused as to what is wrong  Edit  Deleted Answer  The following command pip install -U numpy   helps solving the problem  could not load numpy core multiarray

User · Answer

OK so I found a solution that worked for me when trying to get OpenCV to work with Python 3.9 on Windows 10.

This is a known issue for Windows versions past v2004.

In short, the version of NumPY that you need is v1.19.3:

pip uninstall numpy

pip install numpy==1.19.3

Or to do this in one command, use the --force-reinstall flag for pip:

pip install --force-reinstall numpy==1.19.3

User · Answer

The same error came for me  The problem is that you might have created a file called numpy py  This file might coincide with numpy library  So  delete that numpy py file and the problem gets solved

User · Answer

pip install numpy  1 19 3  this did the job for me

User · Answer

Try sudo pip install numpy --upgrade --ignore-installed   It work in Mac OS 10 11   You should close The  Rootless  if above shell isn t work

User · Answer

In my case installing from apt solved my problem   You can try uninstall it from pip and install from apt  if you are using ubuntu etc    pip3 uninstall numpy sudo apt-get install python3-numpy

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Just fixed this issue  import c2 or import numpy was not working  Uninstalled the most current version of numpy  Tried to install numpy  1 15 2  just like specified above  did not work  Tried  numpy  1 19 3 IT worked  I guess not all versions work perfectly with all versions of python and dependencies  So keep uninstalling and install one that works

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Encountered this when trying to import Pytorch  Solved it by uninstalling or removing numpy repeatedly until no version was left on my Ubuntu and installing the newest version  In my case pip encountered Access is denied permission errors all the time maybe because of conflict with conda  Run sudo pip uninstall numpy  If it refuses to delete the package from a  lt location gt   make sure to make it the location of that specific package  not all packages - this is irreversible   run sudo rm -r  lt location gt   Repeat above until the first command doesn t do anything and import numpy can t find the package within Python shell  Install numpy using pip

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for me this error came up when installing pygrib with conda and importing it    conda install -c conda-forge numpy   solved the problem

User · Answer

I Had the same error occurring as I was using the numpy version suggested by the requirements txt in the repo  When I tried to  import pandas as pd  this error occurred  Then the solution was to upgrade numpy version to 1 15 2 as the version suggested in the requirements was mismatching with pandas  I uninstalled the existing numpy version with pip and reinstalled the new version   pip install numpy  1 15 2    Hope this helps someone

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I had the same error after installing python and opencv in my D  drive  C  runs on a SSD   The problem seemed to be that my execution path was inside the numpy folder  You can check if that s the issue with this code    import numpy numpy version version   In case it retrieves any error related to the execution path  execute your original code from elsewhere  That solved the could not load numpy core multiarray error for me

User · Answer

Tilde folders  In the event pip uninstall numpy and reinstallation of Numpy does not work  Review your site-packages folder for sub-folders beginning with a tilde     These folders relate to pip installations that got mangled and the installation was aborted part way through  The tilde folders were only ever meant to be tmp folders but ended up becoming permanent  In my case there was a file called  mpy which was a mangled legacy Numpy folder  This led to compatibility issues and ImportErrors    These mangled folders can safely be deleted  for further details see this answer

User · Answer

In the case that pip install -U numpy   doesn t work  even with sudo   you may want to make sure you re using the right version of numpy   I had the same  quot numpy core multiarray failed to import quot  issue  but it was because I had 1 6 installed for the version of Python I was using  even though I kept installing 1 8 and assumed it was installing in the right directory  I found the bad numpy version by using the following command in my Mac terminal  python -c  quot import numpy print numpy   version    print numpy   file    quot    This command gave me the version and location of numpy that I was using  turned out it was 1 6 2   I went to this location and manually replaced it with the numpy folder for 1 8  which resolved my  quot numpy core multiarray failed to import quot  issue   Hopefully someone finds this useful  Note  For the command  use double underscore before and after  version  and  file

User · Answer

I had the same error message  after trying some of the suggested solutions without success  I found that I needed to run   pip uninstall numpy   multiple times   Each time several different files were flagged for removal  from different versions of numpy that had accumulated on my system   Once there was nothing left to uninstall  it was a matter of  pip install numpy   Hope this helps someone

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After having a nightmare using the pip install -U numpy several months ago  I gave up   I went through installing CV2s and opencv without success   I was using numpy ver 1 9 1 on python34 and the upgrade just kept stalling on on 1 9   So I went to https   pypi python org pypi numpy and discovered the latest numpy version for my python3 4    I downloaded the  whl file and copied it into the folder containing my python installation  C  Python34  in my case     I then ran pip intall on the file name and I can now import cv2 problem free   Make sure you close down python before you start  obvious but essential

User · Answer

I don t really understand this error but I solved this error with below   pip install -U opencv-python   Hope it was useful

User · Answer

This helped me  sudo pip3 install --upgrade --target  home  lt username gt   local lib python3 6 site-packages numpy

User · Answer

It worked for me  So you can try following command    pip install numpy -I

User · Answer

For me it was a two part  First   pip uninstall numpy   Then  Oli Blum answer  thank you    conda install -c conda-forge numpy   That did the trick for me

User · Answer

I used Anaconda environment and had the same issue  I tried all the aforementioned approaches and  alas  it didn t help me  Accumulated the suggestions  here the way which helped me   Delete all NumPy folders in the virtual environment or in the system if you don t use a virtual environment  for example in my case    home anaconda3 envs  lib python site-packages numpy   home anaconda3 envs  lib python site-packages numpy libs   home anaconda3 envs  lib python site-packages numpy- dist-info  Install new Numpy with  pip install numpy -U   Hope  it could help in the same case

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I was able to solve the problem by updating my python to 3 8  I am using Macbook Air with Catalina  The problem started for me after updating TensorFlow  After updating it  the error doesn t disappear after I uninstalled and installed numpy several times   Finally  I downloaded the python3 8 package from python website and installed  Then I installed numpy and it worked

User · Answer

If you want a specific version     pip install numpy  1 8

User · Answer

I was getting the same error and the problem was solved by updating my numpy installation from 1 7 1 to 1 12 1  pip install -U numpy   The followings were my cmd sequence when the error was occurred   slightly different from the above     python  Python 2 7 12  Anaconda 4 2 0  x86 64    default  Jul  2 2016  17 43 17     GCC 4 2 1  Based on Apple Inc  build 5658   LLVM build 2336 11 00   on darwin  Type  help    copyright    credits  or  license  for more information   Anaconda is brought to you by Continuum Analytics   Please check out  http   continuum io thanks and https   anaconda org   gt  gt  gt  import cv2   gt  gt  gt  import numpy as np   gt  gt  gt  from matplotlib import pyplot as plt

User · Answer

I was getting the same error and was able to solve it by updating my numpy installation to 1 8 0   pip install -U numpy

User · Answer

uninstall existing numpy and install opencv-python will resolve the issue

User · Answer

run this codes worked for me  seems to be issue with version  pip uninstall numpy  pip install numpy  1 19 3

User · Answer

In my case this problem was because I d two python installations  2 7 and 3 5  and pip was installing numpy in the 3 5 python directory only  irrespective of which pip version I used   I solved the problem by explicitly specifying the target install directory as such   pip install --target c  apps python-2 7 Lib site-packages numpy

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I got this same error in a conda environment  only six  years later   The other responses were helpful  and eventually I tracked it down to this problem    gt  conda list numpy   packages in environment at  Anaconda3       Name                    Version                   Build  Channel numpy                     1 14 5                   pypi 0    pypi numpy-base                1 18 1           py36hc3f5095 1 numpydoc                  0 9 1                    pypi 0    pypi   The problem was that  numpy  was a different version than  numpy-base    I solved this with    gt  conda install numpy-base 1 14 5   so the two of them matched each other

User · Answer

you may need upgrade pip  it works for me   pip install --upgrade pip pip install -U numpy

User · Answer

If you are using python3  the following command fixes the problem in macos   python3 -m pip install numpy -I

User · Answer

I had the same issue  and here s how it s solved in my case   I tried pip install -U numpy but it didn t upgrade numpy  but conda install worked for me  ImportError  numpy core multiarray failed to import admin MacBook-Air  pip install -U numpy Requirement already up-to-date  numpy in  Users admin anaconda lib python2 7 site-packages admin MacBook-Air  python Python 2 7 12  Anaconda 2 4 0  x86 64    default  Jul  2 2016  17 43 17    GCC 4 2 1  Based on Apple Inc  build 5658   LLVM build 2336 11 00   on darwin Type  help    copyright    credits  or  license  for more information  Anaconda is brought to you by Continuum Analytics  Please check out  http   continuum io thanks and https   anaconda org  gt  gt  gt  import numpy numpy version version  gt  gt  gt  numpy version version  1 7 1   gt  gt  gt  exit Use exit   or Ctrl-D  i e  EOF  to exit  gt  gt  gt   admin MacBook-Air   admin MacBook-Air  conda install numpy Fetching package metadata         Solving package specifications              Package plan for installation in environment  Users admin anaconda   The following packages will be downloaded       package                                 build     --------------------------- -----------------     scikit-learn-0 18 1               np111py27 0         4 9 MB  The following packages will be UPDATED       numexpr       2 3 0-np17py27 0  -- gt  2 6 1-np111py27 1      numpy         1 7 1-py27 2      -- gt  1 11 2-py27 0          scikit-learn  0 14 1-np17py27 1 -- gt  0 18 1-np111py27 0     scipy         0 13 2-np17py27 1 -- gt  0 18 1-np111py27 0  Proceed   y  n   y  Fetching packages     scikit-learn-0 100                                                                      Time  0 00 16 312 60 kB s Extracting packages            COMPLETE                                                                                              100  Unlinking packages            COMPLETE                                                                                              100  Linking packages            COMPLETE                                                                                              100

User · Answer

pip install opencv-python  3 4 2 17 numpy  1 14 5   done the job for me

[python] ImportError: numpy.core.multiarray failed to import

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