I am using Visual Studio Code and try to 'import cv2', but I see an error.
import cv2
import numpy as np
def sketch(image):
img_gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
img_gray_blur = cv2.GaussianBlur(img_gray, (5,5), 0)
canny_edges = cv2.Canny(img_gray_blur, 10, 70)
ret, mask = cv2.threshold(canny_edges, 70, 255, cv2.THRESH_BINARY_INV)
return mask