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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 read_caffemodel(prototxt_fname, caffemodel_fname):
 """Return a caffe_pb2.NetParameter object that defined in a binary caffemodel file """

    if use_caffe:
        caffe.set_mode_cpu()
        net = caffe.Net(prototxt_fname, caffemodel_fname, caffe.TEST)
        layer_names = net._layer_names
        layers = net.layers
        return (layers, layer_names)
    else:
        proto = caffe_pb2.NetParameter()
        with open(caffemodel_fname, 'rb') as f:
            proto.ParseFromString(f.read())
        return (get_layers(proto), None)