How to install cv2?

Question

My environment: Ubuntu 18.0.4 LTS (also tried on 19.04)

I use/need python3 (3.6.8 installed)

I need cv2, which is a model of opencv.

I tried several receipts I found on the Internet, but nothing worked.

I tried to install as pre-compiled (sudo apt-get install python-opencv) - No error, but when I try the test:

import cv2 as cv
print(cv.__version__)

I get error module not found.

The problem seems that I have installed also anaconda. The above test uses then anaconda, and cannot find the module.

Compiling from source installed for python2, but I do need python3. (The test also uses anaconda)

One of my receipts worked till the end, but with the line:

workon OpenCV-master-py3

It gaves me the error workon not found.

I tried then to install via Conda, but that wants to downgrade Conda.

Is there a way to run it without anaconda and find a replacement for "workon OpenCV-master-py3"

Answer 1

For python3 you can simply do pip3 install opencv-python and it will work.