如何在Python-righaph中删除边缘属性

Question

我想从 python-igraph中的图对象中删除一个边缘属性。等效的Igraph r函数被巧妙地称为delete_edge_attr。我找不到python中的等效函数/方法...有一个吗？

如果没有，还有另一种方法吗？（我尝试了一个简单的g.es['edge_attr']= []，但这不起作用）。

示例代码

g = ig.Graph.Tree(10, 2)        #Generate random graph
g_betweenness = g.betweenness() #Calculate betweenness for graph
g['betweenness'] = betweenness  #Assign betweenness as edge attribute
print(g.attributes())
g['betweenness'] = []           #Attempt to remove betweenness edge attribute (incorrect)
print(g.attributes())

输出

['betweenness']
['betweenness']

所需的输出

['betweenness']
[]

Answer 1

您可能无法将其设置为空数组，但是您直接更改EdgeSequence的直觉已经很好。您可以简单地使用Python的内部del()删除参数，我在下面包含了一个最小示例：

import igraph
# minimal graph
G = igraph.Graph()
G.add_vertices(2)
G.add_edge(0,1)
# add your property
G.es['betweenness'] = [1]
# print edge attribute (note the difference to your example)
print(G.es.attribute_names())
# output: ['weight']
# delete argument
del(G.es['weight'])
# print again
print(G.es.attribute_names())
# output: []