code: def sys_update_char(
      asciiCode: int,
      fontx: int,
      fonty: int,
      img: tcod.image.Image,
      x: int,
      y: int,
  ) -> None:
      
      lib.TCOD_sys_update_char(_int(asciiCode), fontx, fonty, img, x, y)
docs: Dynamically update the current font with img.
  
      All cells using this asciiCode will be updated
      at the next call to :any:`tcod.console_flush`.
  
      Args:
          asciiCode (int): Ascii code corresponding to the character to update.
          fontx (int): Left coordinate of the character
                       in the bitmap font (in tiles)
          fonty (int): Top coordinate of the character
                       in the bitmap font (in tiles)
          img (Image): An image containing the new character bitmap.
          x (int): Left pixel of the character in the image.
          y (int): Top pixel of the character in the image.