>>> import pyautogui
>>> button7location = pyautogui.locateOnScreen('button.png') # returns (left, top, width, height) of matching region
>>> button7location
(1416, 562, 50, 41)
>>> buttonx, buttony = pyautogui.center(button7location)
>>> buttonx, buttony
(1441, 582)
>>> pyautogui.click(buttonx, buttony) # clicks the center of where the button was found