Module 'cv2.cv2' has no attribute 'COLOR'

Question

Installed all needed packages but doesn't seem to work.

Traceback (most recent call last):
  File "convert.py", line 5, in <module>
    gray = cv2.cvtColor(slika, cv2.COLOR.BGR2GRAY)
AttributeError: module 'cv2.cv2' has no attribute 'COLOR'

Answer 1

gray = cv2.cvtColor(slika, cv2.COLOR.BGR2GRAY)

This is invalid, it should be COLOR_BGR2GRAY instead, like this:

gray = cv2.cvtColor(slika, cv2.COLOR_BGR2GRAY)