Just testing YouTube video embedding and code block snippets:

def count_out_degrees(adjacency_dict):
    """
    Scan Value (edge) length for each Key (node) to
    retrun outdegree(list)
    """
    out_edges = defaultdict(int)

    for node, edges in adjacency_dict.items():
        # Additional check for an edge that has no out edge.
        for edge in edges:
            if edge not in out_edges:
                out_edges[edge] = 0
        # ---
        out_edges[node] = len(edges)
    return out_edges

Testing this: Awesome Text.

Image Test: