python opencv cv2.waitkey 错误

Question

i'm trying to test the following code of the getting started page :

import numpy as np
import cv2   
img = cv2.imread('test.jpg', 0)
cv2.imshow('image', img)
cv2.waitkey(0)&0xFF
cv2.destroyAllWindows()

But i got this error:

init done 
opengl support available 
Traceback (most recent call last):
  File "showimg.py", line 5, in <module>
    cv2.waitkey(0)&0xFF
AttributeError: 'module' object has no attribute 'waitkey'
Violación de segmento

I executed the examples that comes with the opencv installation, and they run correctly. Also, the last example that use the Matplotlib works fine.

¿Any idea of the error?, ¿any suggestion?

Answer 1

AttributeError: 'module' object has no attribute 'waitkey'

Try cv2.waitKey in place of cv2.waitkey . Capitalization counts.

Answer 2

cv2.waitKey()

This syntax works. In the open parentheses add time.

Answer 3

尝试使用waitKey() 而不是waitkey()，效果很好。

Answer 4

'module' object has no attribute 'waitkey' 

For solving this problem you should use this code:

'waitKey' with capital K, it will solve your problem.