我正在使用Jupyter Notebook进行图形分析。我需要使用Networkx来生成MultiDiGraph，我需要将其绘制为树，但出现了一个错误：
from networkx.drawing.nx_agraph import write_dot, graphviz_layout
write_dot(G,'test.dot')
plt.title('draw_networkx')
pos =graphviz_layout(G, prog='dot')
nx.draw(G, pos, with_labels=False, arrows=True)
ModuleNotFoundError Traceback (most recent call last)
D:ProgrammesAnaconda3libsite-packagesnetworkxdrawingnx_agraph.py in to_agraph(N)
131 try:
--> 132 import pygraphviz
133 except ImportError as e:
ModuleNotFoundError: No module named 'pygraphviz'
The above exception was the direct cause of the following exception:
ImportError Traceback (most recent call last)
~AppDataLocalTemp/ipykernel_33384/3939344011.py in <module>
----> 1 write_dot(G,'test.dot')
2 plt.title('draw_networkx')
3 pos =graphviz_layout(G, prog='dot')
4 nx.draw(G, pos, with_labels=False, arrows=True)
D:ProgrammesAnaconda3libsite-packagesnetworkxdrawingnx_agraph.py in write_dot(G, path)
183 Filename or file handle to write
184 """
--> 185 A = to_agraph(G)
186 A.write(path)
187 A.clear()
D:ProgrammesAnaconda3libsite-packagesnetworkxdrawingnx_agraph.py in to_agraph(N)
132 import pygraphviz
133 except ImportError as e:
--> 134 raise ImportError("requires pygraphviz " "http://pygraphviz.github.io/") from e
135 directed = N.is_directed()
136 strict = nx.number_of_selfloops(N) == 0 and not N.is_multigraph()
ImportError: requires pygraphviz http://pygraphviz.github.io/
所以我按照这个问题的说明做了，但我还是犯了同样的错误。也许我需要做一些其他的事情来将Pygraphviz添加到我的Anaconda环境中，这样我就可以使用networkx pygraphviz layouts了。
关于如何做好这件事，有什么建议吗？
我有Graphviz 2.5二进制文件，环境变量路径填充了bin的路径，所以我现在可以做上面链接的问题中显示的例子。但我感兴趣的代码需要Pygraphviz，所以我觉得我正在掌握我的网络。
您安装了错误的graphviz包装器，即python-graphviz，但您需要pyGraphviz:
conda install -c conda-forge pygraphviz