what is i = i[0] for? yolo, cv2

I am very new to computer vision with python. I found a script to run a yolo.weights file. Everything runs smoothly until it hits this part: for i in indices: i = i[0] box = bbox[i] x,y,w,h = box[0], box[1], box[2], box[3] cv2.rectangle(img, (x,y),(x+w,y+h),(0,255,0),2) cv2.putText(img, f'{classNames[classIds[i]].capitalize()} {int(confs[i]*100)}%’ (x+10,y+30), cv2.FONT_HERSHEY_SIMPLEX, 0.9,(255,255,255),2) It gives the error: File… Read More what is i = i[0] for? yolo, cv2