AttributeError: module ‘cv2‘ has no attribute ‘xfeatures2d‘

Solution:

1. Reduce the version of opencv-python

pip install opencv-python==3.4.2.16 -i https://pypi.doubanio.com/simple/

pip install opencv-contrib-python==3.4.2.16 -i https://pypi.doubanio.com/simple/

2. Change the function name

sift = cv2.xfeatures2d.SIFT_create()

Change to:

sift = cv2.SIFT_create()