Traceback (most recent call last):
  File "[...]/pattern.py", line 7, in <module>
    ss = cv2.ximgproc.segmentation.createSelectiveSearchSegmentation()
AttributeError: module 'cv2' has no attribute 'ximgproc'
Steps to reproduce
Run the following file
import cv2
img = cv2.imread("image.jpg")
# Create a Selective Search object
ss = cv2.ximgproc.segmentation.createSelectiveSearchSegmentation()
# Set the input image
ss.setBaseImage(img)
# Run the selective search algorithm
ss.switchToSelectiveSearchFast()
rects = ss.process()
# Show the results
for i, rect in enumerate(rects):
    x, y, w, h = rect
    cv2.rectangle(img, (x, y), (x+w, y+h), (0, 255, 0), 2)
cv2.imshow("Selective Search", img)
cv2.waitKey(0)
operating system & architecture : I use Ubuntu 22.04 (x86-64)
opencv-python version : opencv_python-4.7.0.72 with Python 3.10.6
I used to following methods to try to mitigate this issue:
I uninstalled opencv-python and checked that it was not installed anymore.
I purged the download cache of pip
I installed opencv-python with pip.
Issue submission checklist
 This is not a generic OpenCV usage question (looking for help for coding, other usage questions, homework etc.)
 I have read the README of this repository and understand that this repository provides only an automated build toolchain for OpenCV Python packages (there is no actual OpenCV code here)
 The issue is related to the build scripts in this repository, to the pre-built binaries or is a feature request (such as "please enable this additional dependency")
 I'm using the latest version of opencv-python