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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 "C:\Users\John\Documents\EyeTracking\Programs\GetImage.py", 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?
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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
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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 "numpy.core.multiarray failed to import" 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 "import numpy;print(numpy.__version__);print(numpy.__file__)";
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 "numpy.core.multiarray failed to import" issue. Hopefully someone finds this useful!
Note: For the command, use double underscore before and after 'version' and 'file'
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If you are using python3, the following command fixes the problem on MacOS:
python3 -m pip install numpy -I
-I in detail:
pip install --help
-I, --ignore-installed Ignore the installed packages, overwriting them.
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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!
All these varied answers suggest that many different problems appear as ImportError: numpy.core.multiarray failed to import.
==> So look for more error information before the stack traceback
E.g. steps to reproduce one such problem (these steps worked fine until numpy 1.20 was released):
# set up a virtualenv
pyenv virtualenv 3.8.7 pip-issue-9542
pyenv local pip-issue-9542
# update pip, setuptools
pip install -U pip setuptools
# install 2 pips
pip install --no-cache-dir numpy==1.19.5 cvxpy==1.1.3
# try to load cvxpy
python -c 'import cvxpy'
Output:
RuntimeError: module compiled against API version 0xe but this version of numpy is 0xd
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/usr/local/var/pyenv/versions/pip-issue-9542/lib/python3.8/site-packages/cvxpy/__init__.py", line 18, in <module>
from cvxpy.atoms import *
File "/usr/local/var/pyenv/versions/pip-issue-9542/lib/python3.8/site-packages/cvxpy/atoms/__init__.py", line 20, in <module>
from cvxpy.atoms.geo_mean import geo_mean
File "/usr/local/var/pyenv/versions/pip-issue-9542/lib/python3.8/site-packages/cvxpy/atoms/geo_mean.py", line 20, in <module>
from cvxpy.utilities.power_tools import (fracify, decompose, approx_error, lower_bound,
File "/usr/local/var/pyenv/versions/pip-issue-9542/lib/python3.8/site-packages/cvxpy/utilities/power_tools.py", line 18, in <module>
from cvxpy.atoms.affine.reshape import reshape
File "/usr/local/var/pyenv/versions/pip-issue-9542/lib/python3.8/site-packages/cvxpy/atoms/affine/reshape.py", line 18, in <module>
from cvxpy.atoms.affine.hstack import hstack
File "/usr/local/var/pyenv/versions/pip-issue-9542/lib/python3.8/site-packages/cvxpy/atoms/affine/hstack.py", line 18, in <module>
from cvxpy.atoms.affine.affine_atom import AffAtom
File "/usr/local/var/pyenv/versions/pip-issue-9542/lib/python3.8/site-packages/cvxpy/atoms/affine/affine_atom.py", line 22, in <module>
from cvxpy.cvxcore.python import canonInterface
File "/usr/local/var/pyenv/versions/pip-issue-9542/lib/python3.8/site-packages/cvxpy/cvxcore/python/__init__.py", line 3, in <module>
import _cvxcore
ImportError: numpy.core.multiarray failed to import
The important clue is RuntimeError: module compiled against API version 0xe but this version of numpy is 0xd.
Searching on that can get you to pip issue 9542 and cvxpy issue 1229 which explain what went wrong.
The workarounds in this case are to (a) update to cvxpy>=1.1.10, or (b) update to numpy>=1.20, or (c) update both. You'll have to cope with library changes since the original environment is not reproducible without diving into pip's --no-build-isolation world.
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
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
for me this error came up when installing pygrib with conda and importing it.
conda install -c conda-forge numpy
solved the problem.
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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
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
>>> import cv2
>>> import numpy as np
>>> from matplotlib import pyplot as plt
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
I don't really understand this error but I solved this error with below.
pip install -U opencv-python
Hope it was useful!
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
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
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
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
>>> import numpy
numpy.version.version
>>> numpy.version.version
'1.7.1'
Use exit() or Ctrl-D (i.e. EOF) to exit
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 --> 2.6.1-np111py27_1
numpy: 1.7.1-py27_2 --> 1.11.2-py27_0
scikit-learn: 0.14.1-np17py27_1 --> 0.18.1-np111py27_0
scipy: 0.13.2-np17py27_1 --> 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%
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
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.
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:
> 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:
> conda install numpy-base=1.14.5
so the two of them matched each other.
