Python图像处理库PIL的ImageGrab模块介绍详解

> from PIL importImage, ImageGrab
> im =ImageGrab.grab() 
> im.size 
(1366, 768) 
> im.mode 
'RGB' 
> im.show() 
> im0 =ImageGrab.grab((300, 100, 1400, 600)) 
> im0.show()
> im0.size
(1100, 500)
> im0.mode
'RGB'

from PIL import Image, ImageGrab
 
im = ImageGrab.grabclipboard() 
if isinstance(im, Image.Image):
 print "Image: size : %s, mode: %s" % (im.size, im.mode)
 im.save("D:\\Document\\mdoc\\python\\pic\\12\\grab_grabclipboard.jpg")
elif im:
 for filename in im:
  try:
   print "filename: %s" % filename
   im = Image.open(filename)   
  except IOError:
   pass #ignore this file
  else:
   print "ImageList: size : %s, mode: %s" % (im.size, im.mode)
else:
 print "clipboard is empty."

>isinstance(100, int)
True
 
>isinstance(10.5, int)
False
 
>isinstance(10.5, float)
True
 
>isinstance(10.5, int)
False

>isinstance(10.5, (int,float)) 
True

from PIL import Image
from PIL import ImageGrab
 
size = (300,300,400,400)
img = ImageGrab.grab(size)
img.save("cut.jpg")
img.show()