如何访问Python Graph-Tool属性映射中的“类"字段? [英] How do I access Class fields in Python Graph-Tool property maps?
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问题描述
我正在尝试绘制一个具有作为顶点属性的类的图形.如何在vertex_text
设置为它们包含的类的名称字段的情况下绘制图形?
I'm trying to draw a graph with a class as a vertex property. How do I draw the graph with the vertex_text
set to the name field of the classes they contain?
from graph_tool.all import *
class Node(object):
def __init__(self, name, age):
self.symbol = name
self.named_entity = age
#create your graph object
g = Graph()
#add the property to vertex object
vprop = g.new_vertex_property("object")
#add vertex
v1 = g.add_vertex() #here you create a vertex
v2 = g.add_vertex() #here you create a vertex
#set the value to the vertex property
vx1 = Node("John", 15)
vx2 = Node("Sarah", 22)
vprop[v1] = vx1
vprop[v2] = vx2
#assign properties as a dic value
g.vertex_properties["node"]=vprop
#add edge
g.add_edge(vertex_1,vertex_2) #add an edge
#draw you graph
graph_draw(
g,
vertex_text=g.vertex_properties["node"].name,
vertex_font_size=18,
output_size=(200, 200),
)
推荐答案
您提供的代码示例充满了基本错误.您定义vprop
,但随后使用v_prop
.该代码在任何情况下都不起作用,因为属性映射被定义为字符串类型,但是您要为其设置一个类对象.
The code example you give is full of basic errors. You define vprop
but then you use v_prop
. The code would not work in any case, as the property map is defined to be of string type, but you are setting to it a class object.
但是对基本问题的答案只是将名称设置为字符串属性映射并使用它.
But answer to the underlying question is simply to set a the names to a string property map and use that.
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