Source code of "flann.knnMatch" and "cv2.SIFT_create()"

Python
1

Hi,
I am searching for the source code “flann.knnMatch” and “cv2.SIFT_create()” of these in python, but only function definitions are written. Can any body point me out to the source code of these, it will be great help.
Thanks in advance.

2

opencv is actually a c++ library, there is no python src code for this
however, have a look here and here

3

@berak thanks for quick response