1. First, it is not feasible to enter pip3 install openCV directly in cmd, that is, you need to download the installation package yourself and install it locally.
Library Download Address/~gohlke/pythonlibs/#opencv
3.opencv_python‑3.4.2‑cp37‑cp37m‑win_amd64.whl (cp37 refers to the python version, win_amd64 refers to python being 64-bit. It is also possible that someone has a 64-bit system that has 32-bit Python installed, and at this time, you need to install the win32 version)
4. After the download is completed, enter pip3 install file path\opencv_python‑3.4.2‑cp37‑cp37m‑win_amd64.whl in cmd
5. If an error occurs opencv_python‑3.4.2‑cp37‑cp37m‑win_amd64.whl is not a supported wheel on this platform. In cmd, you can query the version that your python can support through the following code, and then select the version that suits you.
#AMD_64
import pip._internal
print(pip._internal.pep425tags.get_supported())
#Win32
import pip
print(pip.pep425tags.get_supported())
[('cp37', 'cp37m', 'win_amd64'), ('cp37', 'none', 'win_amd64'), ('py3', 'none', 'win_amd64'), ('cp37', 'none', 'any'), ('cp3', 'none', 'any'), ('py37', 'none', 'any'), ('py3', 'none', 'any'), ('py36', 'none', 'any'), ('py35', 'none', 'any'), ('py34', 'none', 'any'), ('py33', 'none', 'any'), ('py32', 'none', 'any'), ('py31', 'none', 'any'), ('py30', 'none', 'any')]
Summarize
The above is the method of installing the openCV library in Python 3.7 introduced to you by the editor. I hope it will be helpful to you. If you have any questions, please leave me a message and the editor will reply to you in time. Thank you very much for your support for my website!