Unable to install open cv using pip on Python 3.9

Question

 ERROR: Command errored out with exit status 1: 'e:\python\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\mmusa\\AppData\\Local\\Temp\\pip-install-z5zd5j52\\numpy\\setup.py'"'"'; __file__='"'"'C:\\Users\\mmusa\\AppData\\Local\\Temp\\pip-install-z5zd5j52\\numpy\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\mmusa\AppData\Local\Temp\pip-record-wre2z2vk\install-record.txt' --single-version-externally-managed --prefix 'C:\Users\mmusa\AppData\Local\Temp\pip-build-env-zf5z8fdj\overlay' --compile --install-headers 'C:\Users\mmusa\AppData\Local\Temp\pip-build-env-zf5z8fdj\overlay\Include\numpy' Check the logs for full command output.
  ----------------------------------------
ERROR: Command errored out with exit status 1: 'e:\python\python.exe' 'e:\python\lib\site-packages\pip' install --ignore-installed --no-user --prefix 'C:\Users\mmusa\AppData\Local\Temp\pip-build-env-zf5z8fdj\overlay' --no-warn-script-location --no-binary :none: --only-binary :none: -i https://pypi.org/simple -- setuptools wheel scikit-build cmake pip 'numpy==1.11.3; python_version=='"'"'3.5'"'"'' 'numpy==1.13.3; python_version=='"'"'3.6'"'"'' 'numpy==1.14.5; python_version=='"'"'3.7'"'"'' 'numpy==1.17.3; python_version>='"'"'3.8'"'"'' Check the logs for full command output.

I get this error while installing opencv. I have upgraded my pip and I am currently using Python 3.9. Any help would be appreciated

The important part of this error message is missing. Do you have build tools installed on your system? — sytech
– sytech, Commented Nov 1, 2020 at 7:45

sytech · Accepted Answer · 2020-11-01 07:51:26Z

2

Note the opencv project readme does not yet state support for Python 3.9

Supported Python versions Python 3.x compatible pre-built wheels are provided for the officially supported Python versions (not in EOL):

3.6

3.7

3.8

Without prebuilt wheels, you'll need to build it yourself. Make sure you have proper build tools installed on your system.

Also note:

on Windows, make sure you have Visual C++ redistributable 2015 installed. If you are using older Windows version than Windows 10 and latest system updates are not installed, Universal C Runtime might be also required.

Alternatively, you can try downloading an unofficial wheel for opencv (and other dependencies) for Python 3.9 and installing from wheel files

edited Nov 1, 2020 at 7:51

answered Nov 1, 2020 at 7:43

sytech

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manjunatha poojari · Accepted Answer · 2021-07-28 17:10:11Z

1

Python 3.9 is supported in the latest version of opencv. source

answered Jul 28, 2021 at 17:10

manjunatha poojari

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aniket · Accepted Answer · 2020-11-01 08:04:49Z

0

right now openCV is not supporting python 3.9

its better to use earlier version of python, like 3.5 so everything is in original and stable

answered Nov 1, 2020 at 8:04

aniket

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ADcoder · Accepted Answer · 2020-11-01 07:36:24Z

0

I had the same problem here for downloading modern machine learning libraries(TensorFlow, sci-kit learn)So saw the TensorFlow documentation(official) it was indicating that we should python 3.3-3.8 for installing. I tried that and fortunately, it worked. Hope it works for you! So according to me, you should also install python 3.8

answered Nov 1, 2020 at 7:36

ADcoder

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user13286701 · Accepted Answer · 2022-03-08 02:57:31Z

0

I hope this would help.

sudo apt update

sudo apt install python3-pip

pip3 install opencv-python

answered Mar 8, 2022 at 2:57

user13286701

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