使用元组在Python中绘制Digraph

Question

我想使用元组列表绘制graphviz的Digraph。

from graphviz import Digraph
from itertools import chain   

edges = [("first","sub-first"),("second","sub-second"),("sub-first","sub-second"),("third","sub-third")]
nodes = list(dict.fromkeys([ i for i in chain(*data)]))

您可能会了解，edges是由箭头（x，y）组成的元组列表。 另外，nodes是未重复包装的edges的列表。借助这些数据，我的目的是渲染这样的图形：

Answer 1

我不完全确定您遇到了什么问题-首先，不需要定义节点是否具有边缘-您可以将元组的边缘列表传递给graphviz edges函数，该函数接受可迭代：

from graphviz import Digraph

edges = [("first","sub-first"),("second","sub-second"),("sub-first","sub-second"),("third","sub-third")]
graph = Digraph(format='png')
graph.edges(edges)
graph.render()

输出：