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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 update_position(params):
 """ Computes the center of the viewport's Mandelbrot-space coordinates. :param params: Current application parameters. :type params: params.Params """

    cx = params.plane_x0 + params.plane_w / 2.0
    cy = params.plane_y0 + params.plane_h / 2.0
    params.mb_cx, params.mb_cy = get_coords(cx, cy, params)