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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 ball(rmax=3, rmin=0, shape=128, limits=[-4, 4], draw=True, show=True, **kwargs):
 """Show a ball."""

    import ipyvolume.pylab as p3

    __, __, __, r, _theta, _phi = xyz(shape=shape, limits=limits, spherical=True)
    data = r * 0
    data[(r < rmax) & (r >= rmin)] = 0.5
    if "data_min" not in kwargs:
        kwargs["data_min"] = 0
    if "data_max" not in kwargs:
        kwargs["data_max"] = 1
    data = data.T
    if draw:
        vol = p3.volshow(data=data, **kwargs)
        if show:
            p3.show()
        return vol
    else:
        return data