AttributeError: 'Graph' object has no attribute 'node'

Question

I have bellow python code to build knn graph but I have an error: AttributeError: 'Graph' object has no attribute 'node'. It seems that the nx.Graph() has no node attribute but I don't know what should I replace with that.

import networkx as nx
def knn_graph(df, k, verbose=False):
    points = [p[1:] for p in df.itertuples()]
    g = nx.Graph()
    if verbose: print ("Building kNN graph (k = %d)" % (k))
    iterpoints = tqdm(enumerate(points), total=len(points)) if verbose else enumerate(points)
    for i, p in iterpoints:
        distances = map(lambda x: euclidean_distance(p, x), points)
        closests = np.argsort(distances)[1:k+1] # second trough kth closest
        for c in closests:
            g.add_edge(i, c, weight=distances[c])
        g.node[i]['pos'] = p
    return g

Kirbie

I think it should be nodes. – Pothunter

@Pothunter I'm sorry but it doesn't work. beacuse i have an error on it: line 178, in __getitem__return self._nodes[n] – Kirbie

What is the error? – Pothunter

@Kirbie can you please post the full traceback – Trin

Answer 1

If you are using NetworkX 2.4, use G.nodes[] instead of G.node[]. The latter attribute is deprecated. See the release notes.

Batfowl

In my case, I installed NetworkX 2.0 to solve the error. – Hymn

Answer 2

I had the same issue. I'm using Anaconda3. pip uninstall networkx did not work in Anaconda command window. I opened Anaconda powershell and did pip uninstall networkx and then came back to Anaconda command window to pip install networkx==2.3

After this the error is resolved

Ophthalmoscopy

Answer 3

For me, this error was related to anaconda and miniconda. I have removed miniconda from WSL and no more errors:

remove miniconda
pip install networkx==2.3

then run the related code.

Morocco

That solution seems specific to you. OP has not specified if working with Anaconda. Besides, if I read you correctly, you are suggesting to mix your conda-installed Python with pip, which is a dangerous path regarding the stability of your environment. – Schizo

This does not really answer the question. If you have a different question, you can ask it by clicking Ask Question. To get notified when this question gets new answers, you can follow this question. Once you have enough reputation, you can also add a bounty to draw more attention to this question. - From Review – Schizo