Hello I have an issue with my and I can not find the way to correct this error. If someone has any idea about this

# defining a dictionary of graph features nodes_info_dict = { 'closeness centrality': nx.closeness centrality, 'eigenvector_centrality': nx.eigenvector_centrality_numpy, 'pagerank': nx.pagerank } {x} 0 [] columns_with_node_infos = ['degree'] + list(nodes_info_dict.keys()) nodes_info = pd.DataFrame.from_dict(dict(nx.degree(G)), orient='index').rename (columns = {0 : 'degree'}).reset_index() [] # computing graph features for each node for info, fun in nodes_info_dict.items(): temp = pd.DataFrame.from_dict(fun(G), orient='index').rename(columns = {0 : info}).reset_index() 0 : nodes_info = nodes_info.merge(temp, on='index') nodes_info = nodes_info.rename(columns = {'index': 'Physician'}) KeyError Traceback (most recent call last) in () ----> 1 nodes_info = nodes_info.merge(temp, on='index') m 2 3 4 nodes info = nodes info.renamel columns 'index': 'Physician')