这似乎在 Stack Overflow 上被打死了，但似乎没有一个问题与我的问题相匹配。无论如何，直接进入代码。
这是 Edge.py
from __future__ import division
import sys
from numpy import *
class EdgeList:
def __init__(self, mat):
self.id1 = mat[:,0]
self.id2 = mat[:,1]
self.value = mat[:,2]
def is_above(self):
return self.value>average(self.value)
def stats(self):
pass #omitted; too long and irrelevant here.
这是 AHsparse.py
from __future__ import division
import sys
from numpy import *
from Edge import EdgeList
class AHvector:
def __init__(self, mat):
self.el = EdgeList(mat)
def multiply(self, other):
v=zeros(max(len(self.el.val), len(other.el.val)))
for index in self.id1:
v[index] = self.el.val[index] * other.el.val[index]
return v
这是一些测试代码（其他测试通过）
import sys
from numpy import *
from Edge import EdgeList
from AHsparse import AHvector
testmat =loadtxt('test.data', delimiter=';')
st = EdgeList(testmat)
stv = AHvector(st)
stv = stv.multiply(stv)
print(stv)
错误发生在 AHvector 类的init方法中，但回调到 Edge.py：
Traceback (most recent call last):
File "/Users/syntaxfree/Dropbox/nina/nina lives in objects/sparse_test.py", line 8, in <module>
stv = AHvector(st)
File "/Users/syntaxfree/Dropbox/nina/nina lives in objects/AHsparse.py", line 9, in __init__
self.el = EdgeList(mat)
File "/Users/syntaxfree/Dropbox/nina/nina lives in objects/Edge.py", line 7, in __init__
self.id1 = mat[:,0]
AttributeError: EdgeList instance has no attribute '__getitem__'
[Finished in 0.6s with exit code 1]
恐怕我没有什么要补充的了——除了我能够自己初始化 EdgeList 并在其他测试代码中运行 stats 方法，我完全困惑为什么这不起作用。