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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 expand_score(new_net, new_layer, net, layer):
 """ Transplant an old score layer's parameters, with k < k' classes, into a new score layer with k classes s.t. the first k' are the old classes. """

    old_cl = net.params[layer][0].num
    new_net.params[new_layer][0].data[:old_cl][...] = net.params[layer][0].data
    new_net.params[new_layer][1].data[0,0,0,:old_cl][...] = net.params[layer][1].data