ROI region opencv c++ vs python

edit

Define ROI:

Mat roi(image,Rect(corners[0].x,corners[0].y,s,s));
if(roi.rows<1||roi.cols<1)
        return empty;

I need to find ROI using above code

This is what I'm trying to do in python

 x,y,w,h= [corners[0][0], corners[0][1],s,s]
   roi = image[y:y+h, x:x+w]

(the values of x,y,w,h) is ((1161.4393398282202, -1.0606601717798214, 2.121320343559643, 2.121320343559643) but getting error "TypeError: slice indices must be integers or None or have an __index__ method" Then I convert the value of x,y,w,h into int but doesn't work

I also tried to use cv2.selectROI(winsize,image) winsize = x,y,w,h but still dosent work getting error "TypeError: only size-1 arrays can be converted to Python scalars"

please tell me what should I do.