CODE EXAMPLE FOR PYTHON

pyautogui

>>> pyautogui.screenshot()  # returns a Pillow/PIL Image object
<PIL.Image.Image image mode=RGB size=1920x1080 at 0x24C3EF0>
>>> pyautogui.screenshot('foo.png')  # returns a Pillow/PIL Image object, and saves it to a file
<PIL.Image.Image image mode=RGB size=1920x1080 at 0x31AA198>