如何解决NetworkX模块不存在info属性的AttributeError错误？

nx.info()函数在NetworkX 2.0及以后版本中被移除，直接调用会触发该错误。以下是两种替代方案，实现原nx.info(G)的功能：

方案一：手动输出图的核心信息 #

直接调用NetworkX基础方法打印图的关键属性：

import networkx as nx
G = nx.read_edgelist('webpages.txt', create_using=nx.DiGraph())

print(f"Name: {G.name}")
print(f"Type: {type(G).__name__}")
print(f"Number of nodes: {G.number_of_nodes()}")
print(f"Number of edges: {G.number_of_edges()}")

# 针对有向图额外输出入度/出度统计
if isinstance(G, nx.DiGraph):
    total_in_degree = sum(degree for _, degree in G.in_degree())
    total_out_degree = sum(degree for _, degree in G.out_degree())
    print(f"Average in degree: {total_in_degree / G.number_of_nodes():.2f}")
    print(f"Average out degree: {total_out_degree / G.number_of_nodes():.2f}")

方案二：封装自定义函数复用 #

如果需要频繁使用类似nx.info()的功能，可封装专属函数：

import networkx as nx

def graph_info(graph):
    info_lines = []
    info_lines.append(f"Name: {graph.name}")
    info_lines.append(f"Type: {type(graph).__name__}")
    info_lines.append(f"Number of nodes: {graph.number_of_nodes()}")
    info_lines.append(f"Number of edges: {graph.number_of_edges()}")
    
    if isinstance(graph, nx.DiGraph):
        avg_in_degree = sum(d for _, d in graph.in_degree()) / graph.number_of_nodes()
        avg_out_degree = sum(d for _, d in graph.out_degree()) / graph.number_of_nodes()
        info_lines.append(f"Average in degree: {avg_in_degree:.2f}")
        info_lines.append(f"Average out degree: {avg_out_degree:.2f}")
    else:
        avg_degree = sum(d for _, d in graph.degree()) / graph.number_of_nodes()
        info_lines.append(f"Average degree: {avg_degree:.2f}")
    
    return '\n'.join(info_lines)

# 使用示例
G = nx.read_edgelist('webpages.txt', create_using=nx.DiGraph())
print(graph_info(G))

内容的提问来源于stack exchange，提问作者Patcharaporn Kladkham