Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
356 views
in Technique[技术] by (71.8m points)

python 3.x - Networkx neighbor set not printing

I have a little problem with my networkx code. I am trying to find all the neighbors from a node in a graph, but....

neighbor = Graph.neighbors(element)
print(neighbor)

outputs:

<dict_keyiterator object at 0x00764BA0>

Instead of all the neighbors I am supposed to get... A friend of mine, who is using an older version of networkx does not get this error, his code is exactly the same and works perfectly.

Can anyone help me? Downgrading my networkx is not an option.

Edit:

This is my complete code

Graph = nx.read_graphml('macbethcorrected.graphml')    
actors = nx.nodes(Graph)

for actor in actors:
    degree = Graph.degree(actor)
    neighbor = Graph.neighbors(actor)
    print("{}, {}, {}".format(actor, neighbor, degree))

This is the graph I am using: http://politicalmashup.nl/new/uploads/2013/09/macbethcorrected.graphml

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

From networkx 2.0 onwards, Graph.neighbors(element) returns an iterator rather than a list.

To get the list, simply apply list

list(Graph.neighbors(element))

or use list comprehension:

neighbors = [n for n in Graph.neighbors(element)]

The first method (first mentioned by Joel) is the recommended method, as it's faster.

Reference: https://networkx.github.io/documentation/stable/reference/classes/generated/networkx.Graph.neighbors.html


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...