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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 _pixel_to_tile(x: float, y: float) -> Tuple[float, float]: """Convert pixel coordinates to tile coordinates."""

    xy = tcod.ffi.new("double[2]", (x, y))
    tcod.lib.TCOD_sys_pixel_to_tile(xy, xy + 1)
    return xy[0], xy[1]