如何使用python窗口将屏幕的可裁剪png图像保存到桌面？

Question

I am having trouble saving a full screen image/screenshot to my desktop using python. I have tried

from PIL import ImageGrab
import os
img = img.crop((10, 10, 650, 2000))
mageGrab.grab().save(r"screen_capture.png")
stuffs = process_image(Image.open(r"C:\Users\jacro\pycharmprojects\untitled\screen_capture.png"))
stuffs.save(SCREEN_DIR + r"\screen.png")

But get the picture attached. This happens when I crop the last parameter differently too. Plz help.

image 1

Answer 1

I am assuming you need to crop the screenshot to desired size. If you are using static values, you will need to be careful as values may change with resolution. You can do this statically as below (re-arranging your values).

img2 = img.crop((0, -1000, 2000, 650))

However, preferred way is dynamically calculating crop co-ordinates. like below example ( Inspiration from here )

from PIL import ImageGrab,Image
import os

ImageGrab.grab().save(r"screen_capture.png")
img = Image.open(r".//screen_capture.png")
image_width = img.size[0]
image_height = img.size[1]
horizontal_padding = (max(img.size) - image_width) / 2  #horizontal center 
vertical_padding = (max(img.size) - image_height) / 2    #vertical center

img3 = img.crop(
    (   -horizontal_padding,
        -vertical_padding,
        image_width + horizontal_padding,
        image_height + vertical_padding
    ))
img3.save("img3.png")

Centrally Cropped Screen-Capture