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pyvis报错AttributeError: ‘NoneType‘ object has no attribute ‘render‘

news 2025/6/13 14:53:35

使用 pyvis 结合 networkx 来读取 .graphml 文件，并利用 pyvis 的内置物理引擎（模拟类似 Gephi 的 ForceAtlas2 布局）进行交互式图谱展示。

代码如下：

from networkx import read_graphml
from pyvis.network import Network# 1️⃣ 读取 GraphML 文件
G = read_graphml("./graph_chunk_entity_relation.graphml")# 2️⃣ 创建 PyVis 网络对象
net = Network(notebook=False,          # 如果你在 Jupyter Notebook 中运行设为 Trueheight="800px",width="100%",bgcolor="#222222",      # 深色背景更清晰font_color="white"
)# 3️⃣ 将 NetworkX 图转换为 PyVis 图
net.from_nx(G)# 4️⃣ 设置物理引擎参数，模拟 ForceAtlas2 风格
net.set_options("""
{"physics": {"enabled": true,"solver": "forceAtlas2Based","options": {"barnesHut": {"gravitationalConstant": -5000,"centralGravity": 0.005,"springLength": 200,"springConstant": 0.05,"damping": 0.09},"maxVelocity": 146,"minVelocity": 0.75,"stabilization": {"enabled": true,"iterations": 1000}}}
}
""")# 5️⃣ 生成 HTML 文件并打开浏览器查看
net.show("graph_visualization.html")

代码运行报错

Traceback (most recent call last):File "D:\project\python\nano-graphrag-main\examples\nano_graphrag_cache_ollama_TEST\view.py", line 45, in <module>net.show("graph_visualization.html")File "D:\conda_envs\ocr_graph\lib\site-packages\pyvis\network.py", line 546, in showself.write_html(name, open_browser=False,notebook=True)File "D:\conda_envs\ocr_graph\lib\site-packages\pyvis\network.py", line 515, in write_htmlself.html = self.generate_html(notebook=notebook)File "D:\conda_envs\ocr_graph\lib\site-packages\pyvis\network.py", line 479, in generate_htmlself.html = template.render(height=height,
AttributeError: 'NoneType' object has no attribute 'render'
graph_visualization.html

原因：
pyvis的0.3.2版本有问题。安装0.3.1版本即可。