ImportError: No module named 'cv2' error when trying to use the OpenCV package after installing on Python 3.6. How to get rid?

Question

Python

Installed the OpenCV 3.4.1 package via pip. The installation was successful. OS - Windows 7, 64-bit.
In cmd.exe the module is located:

import cv2
print(cv2.__version__)

produces
3.4.1.
But the Wing IDE 101 does not see:
builtins.ImportError: No module named 'cv2'.
What's wrong?

Answer 1

Most likely you have created a virtual environment. And cv2 installed globally. In cmd, source your environment and do pip for it.

Answer 2

If python2 is installed on the computer, opencv could be installed on it.