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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def console_set_char_background( con: tcod.console.Console, x: int, y: int, col: Tuple[int, int, int], flag: int = BKGND_SET, ) -> None: """Change the background color of x,y to col using a blend mode. Args: con (Console):
 Any Console instance. x (int):
 Character x position from the left. y (int):
 Character y position from the top. col (Union[Tuple[int, int, int], Sequence[int]]):
 An (r, g, b) sequence or Color instance. flag (int):
 Blending mode to use, defaults to BKGND_SET. """

    lib.TCOD_console_set_char_background(_console(con), x, y, col, flag)