code: def take_screenshot():
      global take_a_screenshot
      global screenshot_count
  
      take_a_screenshot = True
      screenshot_count += 1
  
imports: from tkinter import *
  from tkinter import filedialog
  import threading
  import platform
  import caer
label_desc: Use image node_id 7 for calling a global function with example usage: take_screenshot() without return types