下载了opencv之后，进行简单的测试，但一直不能成功

Question

import cv2
img = cv2.imread("C:/Users/阿阿阿洛洛/Desktop/人脸图片/johns/John_Salley/7.jpg")
cv2.imshow("原图",img)
imgGray = cv2.cvtColor(img,cv2.COLOR_BGR2GRAY)
cv2.imshow("灰度图",imgGray)



[ WARN:0@0.110] global D:\a\opencv-python\opencv-python\opencv\modules\imgcodecs\src\loadsave.cpp (239) cv::findDecoder imread_('C:/Users/阿阿阿洛洛/Desktop/人脸图片/johns/John_Salley/7.jpg'): can't open/read file: check file path/integrity
Traceback (most recent call last):
  File "C:\Users\阿阿阿洛洛\Desktop\python\4.py", line 3, in <module>
    cv2.imshow("原图",img)
cv2.error: OpenCV(4.5.5) D:\a\opencv-python\opencv-python\opencv\modules\imgproc\src\color.cpp:182: error: (-215:Assertion failed) !_src.empty() in function 'cv::cvtColor'

Answer 1

路径里不要出现中文，如果用户名有中文的话用相对路径吧，还有就是imshow后面最好在加cv2.waitKey(0)