code: def grab(bbox=None, childprocess=None, backend=None):
      
      if childprocess is None:
          childprocess = childprocess_default_value()
      return _grab(
          to_file=False, childprocess=childprocess, backend=backend, bbox=bbox)
docs: Copy the contents of the screen to PIL image memory.
  
      :param bbox: optional bounding box (x1,y1,x2,y2)
      :param childprocess: pyscreenshot can cause an error,
              if it is used on more different virtual displays
              and back-end is not in different process.
              Some back-ends are always different processes: scrot, imagemagick
              The default is False if the program was started inside IDLE,
              otherwise it is True.
      :param backend: back-end can be forced if set (examples:scrot, wx,..),
                      otherwise back-end is automatic