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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 blurring_kernel(shape=None):
 """Blurring kernel for convolution simulations. The kernel is scaled to sum to one. Returns ------- An image with the following properties: image type: gray scales size: [100, 100] (if not specified by `size`) scale: [0, 1] type: float64 """

    # TODO: Store data in some ODL controlled url
    name = 'motionblur.mat'
    url = URL_CAM + name
    dct = get_data(name, subset=DATA_SUBSET, url=url)

    return convert(255 - dct['im'], shape, normalize='sum')