如何清除未解决的导入'cv2'错误？

Question

I have installed Python 3.9 on my ubuntu 18.04 desktop, i have already installed two libraries using pip3 install 1)opencv-contrib-python 2)opencv-python

Currently i am writing a program in VSCode for which i am importing cv2

I have already default version of python 3.6.9 in my computer. When i use default version as interpreter, program seems to be working fine .But if i switch the interpreter to newly installed python 3.9 , i get an error ModuleNotFoundError: No module named 'cv2'

please someone who has faced such problem and know how to resolve it help me......

Answer 1

The reason is as you described: it is due to the use of the Python environment.

The module " cv2 " is installed in " lib\site-packages\ " in python3.6.9, but when we use "python3.9" without the module " cv2 " installed, VS Code is in "python3.9" The module could not be found in " lib\site-packages\ ".

You could use the command " pip3 --version " to check the source of the module installation tool, the module is installed in " lib\site-packages\ " here:

When using the command " pip3 show opencv-python " to check its installation location: (...\python\python38\lib\site-packages)

Therefore, if you want to use the module "cv2" in "python3.9", please install it in this environment. In addition, it is recommended that you use a virtual environment , it will be stored in "lib\site-packages" in the folder of the project so that you could check it more intuitively.