成功导入 OpenCV，但无法正常工作

Question

I am new to python. Just trying to get the basic idea of python. Here is how I try and get error msg, after I installed the package.

import cv2
import numpy as np
img = cv2.imread('lena.jpg')

print(img.shape)

but i just get a 'NoneType' msg.

It seems I successfully import the openCV package, but I just can't use its functions.

I did move the 'lena.jpg' to the same directory, but still get error msg.

Please advise how I can move on.

Answer 1

It's most likely, that lena.jpg is not in your current working directory. Try specifying the exact path to your image or moving the file to the same directory as your test.py .