python install cv2 - resolved

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Provide a variety of operations, there must be one suitable for you

This is the case, it just can't be installed. There is no nonsense in this article, read it carefully.

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1. Traditional way1

(execute it once, test one by one)

Try python3 -m pip install --upgrade pip

pip install cv2

pip3 install opencv-python

domestic mirror

pip3 install opencv-python -i http://pypi.mirrors.ustc.edu.cn/simple/

pip install cv2 -i http://pypi.mirrors.ustc.edu.cn/simple/

schedule:
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2. The first stage of the ultimate solution 01

Switch python version, python3.9 does not support cv2 (python3.7 and below)


3. The second stage final method 02

install it yourself

https://www.lfd.uci.edu/~gohlke/pythonlibs/#wordcloud

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Wait for the download to complete, copy it to the lib directory under the python installation directory

Then, install it in cmd (first enter the lib directory and then install the file you downloaded)

pip install opencv_python‑2.4.13.7‑cp27‑cp27m‑win_amd64.whl
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Wait for the installation to complete and verify it.

pip install numpy
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4. Ultimate solution 3

2022 0902 windows10 pro test

First make sure you have python installed, here it is installed through the Anaconda3 integrated environment.

Download address: http://www.lfd.uci.edu/~gohlke/pythonlibs/

But I didn't download it successfully on this website. Finally, I tried to find the opencv image file on the website, and the download was successful on this website:

Domestic mirror website: https://mirrors.tuna.tsinghua.edu.cn/pypi/web/simple/opencv-python/

I downloaded the 64-bit version of the corresponding version:opencv_python-4.2.0.32-cp37-cp37m-win_amd64.whl

Save the file to the D:\Anaconda3\Lib\site-packages folder

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Go to the Anaconda3\Lib\site-packages folder

Excuting an orderpip install opencv_python-4.2.0.32-cp37-cp37m-win_amd64.whl

success:

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additional

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download:

If it is the above error, you may need to install OpenSSL. http://slproweb.com/products/Win32OpenSSL.html

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Install:

keep going

Configure environment variables

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