1 #! usr/bin/python
 2 #coding=utf-8
 3 
 4 import numpy as np
 5 from PIL import ImageGrab
 6 import cv2
 7 import time
 8 
 9 def screen_record():
10     last_time = time.time()
11     while(True):
12         printScreen = np.array(ImageGrab.grab(bbox=(0,40,800,640)))
13         print(‘loop took {} seconds‘.format(time.time()-last_time))
14         last_time = time.time()
15         cv2.imshow(‘window‘,cv2.cvtColor(printScreen,cv2.COLOR_BGR2RGB))
16 
17         if cv2.waitKey(25) & 0xFF == ord(‘q‘):
18             cv2.destroyAllWindows()
19             break
20 
21 if __name__ == "__main__":
22     screen_record()