vscode Module 'cv2' has no 'imshow' member
This is from pylint. You can generate a pylint config file in the root of your project with this command:
pylint --generate-rcfile > .pylintrc
Add cv2 so you end up with
# A comma-separated list of package or module names from where C extensions may
# be loaded. Extensions are loading into the active Python interpreter and may
# run arbitrary code.
extension-pkg-whitelist=cv2
Save the file. The lint errors should disappear.