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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 add_letter_to_axis(ax, let, col, x, y, height):
 """Add 'let' with position x,y and height height to matplotlib axis 'ax'. """

    if len(let) == 2:
        colors = [col, "white"]
    elif len(let) == 1:
        colors = [col]
    else:
        raise ValueError("3 or more Polygons are not supported")

    for polygon, color in zip(let, colors):
        new_polygon = affinity.scale(
            polygon, yfact=height, origin=(0, 0, 0))
        new_polygon = affinity.translate(
            new_polygon, xoff=x, yoff=y)
        patch = PolygonPatch(
            new_polygon, edgecolor=color, facecolor=color)
        ax.add_patch(patch)
    return