human
I wrote the below code

    def predict(u, v):
        Cu = _community(G, u, community)
        Cv = _community(G, v, community)
        if (Cu != Cv):
            return 0
        cnbors = nx.common_neighbors(G, u, v)
        return sum(((1 / G.degree(w)) for w in cnbors if (_community(G, w, community) == Cu)))
    return _apply_prediction(G, predict, ebunch)

What's a good function header?
assistant
#Here's a good function header.

@not_implemented_for('directed')
@not_implemented_for('multigraph')
def ra_index_soundarajan_hopcroft(G, ebunch=None, community='community'):