title: How to print x and y coordinates in opencv using python?
body: <p>This is my code below, It will output that face gets recognize but now I want to print out the coordinates of x and y that the person is getting recognized. Would I include the print statement for x and y coordinates in the for loop or outside of it? Please help! Thanks!</p>
  <pre><code>import numpy as np
  import cv2
  import time
  import RPi.GPIO as GPIO
  GPIO.setmode(GPIO.BCM)
  GPIO.setwarnings(False)
  GPIO.setup(18,GPIO.OUT)
  face_cascade = cv2.CascadeClassifier('haarcascade_frontalface_default.xml')
  prevTime = 0
  ## This will get our web camera
   
  cap = cv2.VideoCapture(0)
  font = cv2.FONT_HERSHEY_SIMPLEX
  while True:
      retval, frame = cap.read()
      if not retval:
          break
      _, img = cap.read()              ## This gets each frame from the video, cap.read returns 2 variables flag - indicate frame is correct and 2nd is f
      ##img = cv2.imread('Z.png') Then we get our image we want to use
      gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)   # This method only works on gray skin images, so we have to convert the gray scale to rgb image
      faces = face_cascade.detectMultiScale(gray, 1.1, 5) ## Next, we detect the faces
      if len(faces) &gt; 0:
          print(&quot;[INFO] found {0} faces!&quot;.format(len(faces)))
          GPIO.output(18,GPIO.HIGH)
      else:
          print(&quot;No face&quot;)
          GPIO.output(18,GPIO.LOW)
      for (x, y, w, h) in faces:   ## We draw a rectangle around the faces so we can see it correctly
          cv2.rectangle(img, (x, y), (x+w, y+h), (255, 0, 0))         ## The faces will be a list of coordinates
          cv2.putText(img, 'Myface', (x, y), font, fontScale=1, color=(255,70,120),thickness=2)
      cv2.putText(frame, 'Number of Faces Detected: ' + str, (0,  100), cv2.FONT_HERSHEY_SIMPLEX, 1, (0, 255, 0))
      cv2.imshow('img', img) ## Last we show the image
      x = cv2.waitKey(30) &amp; 0xff
      if x==27:
          break
  ## Press escape to exit the program
  cap.release()
  </code></pre>