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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 setedge(delta, is_multigraph, graph, orig, dest, idx, exists):
 """Change a delta to say that an edge was created or deleted"""

    if is_multigraph(graph):
        delta.setdefault(graph, {}).setdefault('edges', {})\
            .setdefault(orig, {}).setdefault(dest, {})[idx] = bool(exists)
    else:
        delta.setdefault(graph, {}).setdefault('edges', {})\
            .setdefault(orig, {})[dest] = bool(exists)