使用元组在 Python 中绘制有向图

Question

我想用元组列表绘制graphviz的有向图

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)]))

如你所理解，edges是一个由箭头(x,y)组成的元组列表。另外，nodes 是没有重复的解压缩列表 edges。有了这些数据，我的目标是呈现这样的图表：

Answer 1

我不完全确定你遇到了什么问题 - 首先你不需要定义节点，如果它们有边 - 你可以将元组的边列表传递给 graphviz edges 函数，它接受一个可迭代对象：

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：

使用元组在 Python 中绘制有向图

Use tuples to draw Digraph in Python

python

tuples

graph-theory

python-3.x

pygraphviz