[英]AttributeError: 'set' object has no attribute 'b'
I have the following code: 我有以下代码:
N1 = int(input())
a = set(list(map(int, input().split())))
N2 = int(input())
for i in range(N2):
b = input().split()
c = set(list(map(int, input().split())))
a.b[0](c)
print(sum(a))
With typical input, the list b
looks like this: 使用典型的输入,列表b
如下所示:
b = ['intersection_update', '10']
What is the issue with ab[0](c)
? ab[0](c)
什么问题? Apparently I am not evaluating it correctly. 显然我没有正确评估它。
The concept seems fine, but it seems like set a
is not able to take an attribute which is actually an element of a list. 这个概念似乎很好,但似乎set a
无法采用实际上是列表元素的属性。
what I want to evaluate is: 我要评估的是:
a.intersection_update(c)
Here's the error I get: 这是我得到的错误:
Traceback (most recent call last):
File "solution.py", line 7, in
a.b[0](c)
AttributeError: 'set' object has no attribute 'b'
I think you want to use getattr
, to get an attribute who's name stored as a string in another variable: 我认为您想使用getattr
来获取一个属性,该属性的名称作为字符串存储在另一个变量中:
getattr(a, b[0])(c)
Your current code is looking for an attribute named b
on the a
set. 您当前的代码是寻找一个名为属性b
的a
集。
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