在Python3.10中'G.depth = ()‘是什么意思？

Question

使用Python3.10库在绘图中使用WordNet和NetworkX

>>> import networkx as nx
>>> import matplotlib
>>> from nltk.corpus import wordnet as wn
>>> def traverse(graph, start, node):
...     graph.depth[node.name] = node.shortest_path_distance(start)
...     for child in node.hyponyms():
...             graph.add.edge(node.name, child.name)
...             traverse(graph, start, child)
...
>>> def hyponym_graph(start):
...     G = nx.Graph()
...     G.depth = ()
...     traverse(G, start, start)
...     return G

>>> import nltk
>>> nltk.download('omw-1.4')
[nltk_data] Downloading package omw-1.4 to
[nltk_data]     C:\Users\User\AppData\Roaming\nltk_data...
True

用WordNet文本语料库构建图形

>>> dog = wn.synset('dog.n.01')
>>> graph = hyponym_graph(dog)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "<stdin>", line 4, in hyponym_graph
  File "<stdin>", line 2, in traverse
TypeError: 'tuple' object does not support item assignment
>

Answer 1

G.depth = ()正在图G上创建一个新属性(名为depth)，并将其设置为等于()，这是一个空元组。

不过，下面是在traverse函数中使用该属性的方式：

graph.depth[node.name] = node.shortest_path_distance(start)

基于这一点和您得到的错误消息，TypeError: 'tuple' object does not support item assignment，我认为您可能希望将depth属性初始化为空dict，而不是空元组。

G.depth = {}

或

G.depth = dict()