Take Screenshot using Python PIL

# Importing Image and ImageGrab module from PIL package 
from PIL import Image, ImageGrab 
  
# creating an image object 
im1 = Image.open(r"C:\Users\sadow984\Desktop\download2.JPG") 
  
# using the grab method 
im2 = ImageGrab.grab(bbox = None) 
  
im2.show() 

Taking screenshots of specific size or taking screenshots from specific region

# Importing Image and ImageGrab module from PIL package 
from PIL import Image, ImageGrab 
  
# creating an image object 
im1 = Image.open(r"C:\Users\sadow984\Desktop\download2.JPG") 
  
# using the grab method 
im2 = ImageGrab.grab(bbox =(0, 0, 300, 300)) 
  
im2.show() 

Parameters: box – The crop rectangle, as a (left, upper, right, lower)-tuple.

References
https://www.geeksforgeeks.org/pyhton-pil-imagegrab-grab-method/
https://stackoverflow.com/questions/19697210/taking-screen-shots-of-specific-size
https://stackoverflow.com/questions/47337811/what-do-the-parameters-of-bbox-mean-in-pillow