"Could not find a version that satisfies the requirement opencv-python"

Question

I am struggling with Jetson TX2 board (aarch64).

I need to install python wrapper for OpenCV.

I can do:

$ sudo apt-get install python-opencv

But I cannot do:

$ sudo pip install opencv-python

Is this because there is no proper wheel file in http://www.lfd.uci.edu/~gohlke/pythonlibs/#opencv?

Is there a way to install opencv-python through pip?

@traducerad pip does not provide opencv-python for aarch64... — ghchoi, Sep 06 '17 at 14:10
put differently: How can you `import cv2` on the Jetson TX2? — , Sep 06 '17 at 14:25
@traducerad Easy. Compile OpenCV from its source. then just `sudo apt-get install python-opencv`. — ghchoi, Sep 07 '17 at 02:45
I am affraid that this solution may give linking issues at one moment or another. Here is what solved it for me: https://devtalk.nvidia.com/default/topic/1023652/jetson-tx2/how-can-i-run-python-for-opencv-on-my-jetson-/post/5207956/#5207956 :) — , Sep 07 '17 at 11:22

score 58 · Answer 1 · edited Jan 08 '20 at 13:41

58

We were getting the same error.For us, it solved by upgrading pip version (also discussed in FAQ of OpenCV GitHub). Earlier we had pip-7.1.0, post upgrading it to "pip-9.0.2", it successfully installed.

pip install --upgrade pip
pip install opencv-python

edited Jan 08 '20 at 13:41

double-beep

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answered Mar 19 '18 at 07:33

Neo

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You did a pip install of opencv-python on an nvidia jetson tx2? – Mike Lane Mar 23 '18 at 23:31
This broke my Jetson TX2 i upgraded it and installed pip3 version 19.xx and pip3 doesnt work for me anymore. I am now re-flashing my jetson tx2 – i_shoot_photos May 06 '19 at 15:15
For me this did not work (pip 19.1.1 from /home/ubuntu/.pyenv/versions/3.6.8/lib/python3.6/site-packages/pip (python 3.6) ) – Audrius Meškauskas Jun 17 '19 at 12:18

score 20 · Accepted Answer · answered Jul 25 '17 at 11:51

pip doesn't use http://www.lfd.uci.edu/~gohlke/pythonlibs/, it downloads packages from PyPI.

The problem is that you have an unusual architecture; pip cannot find a package for it and there is no source code package.

Unfortunately I think you're on your own. You have to download source code from https://github.com/skvark/opencv-python, install compiler and necessary libraries and compile OpenCV yourself.

score 18 · Answer 3 · edited Nov 28 '18 at 17:50

18

Use this and it will work:

pip install --upgrade pip
pip install opencv-python

edited Nov 28 '18 at 17:50

Paul Roub

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answered Nov 28 '18 at 17:47

Prateek Saini

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To upgrade pip the following command is suggested: python -m pip install --upgrade pip – Gabriel P. Dec 04 '18 at 06:49

score 10 · Answer 4 · answered Nov 03 '19 at 14:05

10

Another problem can be that the python version you are using is not yet supported by opencv-python.

E.g. as of right now there is no opencv-python for python 3.8. You would need to downgrade your python to 3.7.5 for now.

answered Nov 03 '19 at 14:05

Jodo

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This was my issue. I had to downgrade. – Paul Nov 13 '19 at 22:06
Same for me: python 3.8.9 did not work (compatibility pb or a pb on my install?), whereas I could install opencv on python 3.7 or 3.10 (on conda virtual envs). – PJ127 Aug 24 '22 at 07:15

score 8 · Answer 5 · edited Jan 08 '20 at 13:40

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It happened with me on Windows, pip was not able to install opencv-python==3.4.0.12.

Later found out that it was due to the Python version, Python 3.7 has some issue with not getting linked to https://github.com/skvark/opencv-python.

Downgraded to Python 3.6 and it worked with:

pip3 install opencv-python

edited Jan 08 '20 at 13:40

double-beep

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answered Jul 12 '18 at 08:27

Manish S

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score 4 · Answer 6 · answered Feb 10 '21 at 14:59

4

I faced the same issue but the mistake which I was making was pip install python-opencv where I should have used pip install opencv-python. Hope this helps to anyone. It took me few hours to find.

answered Feb 10 '21 at 14:59

Kunal Kumar Jha

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score 2 · Answer 7 · edited Nov 10 '19 at 03:51

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As there is no proper wheel file in http://www.lfd.uci.edu/~gohlke/pythonlibs/#opencv?

Try this:(Worked in Anaconda Prompt or Pycharm)

pip install opencv-contrib-python

pip install opencv-python

edited Nov 10 '19 at 03:51

Nick

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answered Nov 10 '19 at 02:53

Raghavendra Narayan

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opencv explicitly tells NOT to do that: https://github.com/opencv/opencv-python#installation-and-usage – apatsekin Jun 10 '22 at 22:14

score 1 · Answer 8 · answered Jul 17 '19 at 19:34

1

A way to do this is to install Anaconda on your computer.

Then you should be able to do:

pip install opencv-python

or

conda install opencv

answered Jul 17 '19 at 19:34

Akaisteph7

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There's a [guide](https://docs.anaconda.com/anaconda/install/linux/) from Anaconda showing how to. – Akaisteph7 Jul 18 '19 at 12:26

score 1 · Answer 9 · edited Mar 31 '20 at 07:10

1

I had the same error. The first time I used the 32-bit version of python but my computer is 64-bit. I then reinstalled the 64-bit version and succeeded.

edited Mar 31 '20 at 07:10

stateMachine

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answered Mar 30 '20 at 14:44

Trần Duy Anh

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score 1 · Answer 10 · edited Oct 07 '20 at 09:18

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Install it by using this command:

pip install opencv-contrib-python

edited Oct 07 '20 at 09:18

fcdt

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answered Oct 07 '20 at 07:33

manish kumar sah

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score 1 · Answer 11 · answered Jan 26 '21 at 11:25

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I faced same issue while using Python 3.9.0. Upgrading python to latest version (currently 3.9.1) and reinstalling opencv-python solved this issue.

answered Jan 26 '21 at 11:25

Ameer Hamza

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score 0 · Answer 12 · answered Jun 08 '21 at 12:35

I got this error and I solved it by simply waiting.

I had similar problem:

ERROR: Could not find a version that satisfies the requirement opencv-contrib-python (from versions: none)

Command pip update was not resolving my issue. After lunch-time I tried again and it installed correctly the package. Maybe the server was down.

score 0 · Answer 13 · answered Sep 22 '21 at 21:07

0

I update the version of python, and then the issue was addressed. Please refer to this video: https://www.youtube.com/watch?v=BQnpRbbEZB4

answered Sep 22 '21 at 21:07

Annie

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"Could not find a version that satisfies the requirement opencv-python"

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