AttributeError: 'numpy.ndarray' object has no attribute 'width'

[WonjoongCheon]

Execute line

new_im = steg.encode_image(cv2.imread("backgournd_image.jpg"))

Error message:
AttributeError: 'numpy.ndarray' object has no attribute 'width'

the return of cv2.imread(~) doesn't has no attribute width. Becuase, the return is numpy.ndarray.

[Sanjipan_Deb]

I had the same problem too but now I have the solution for this issue just use :
sudo pip install opencv-python
in your terminal , in linux. It will work fine.