old_contents: import os
  import sys
  
  def user_is_root():
      """Check if current UID is 0.
      """
  
      if os.getuid() != 0:
          print("This program requires ROOT privileges. Exiting.")
          sys.exit()
  
  user_is_root()
  
new_contents: import os
  import sys
  
  """Placeholder.
  """
  
  def user_is_root():
      """Check if current UID is 0.
      """
  
      if os.getuid() != 0:
          print("This program requires ROOT privileges. Exiting.")
          sys.exit()
  
  user_is_root()
  
subject: add placeholder