从 3 个列表构建一个集合 - Python

Question

我得到了下面的块，我需要将 'Score' 定义为任何给定两个列表中每组单词的交集/并集。我明白 & 和 |只能成套使用。从 studytonight 我得到下面的代码应该可以工作，但它给了我 > TypeError: unhashable type: 'list'

corpus = [
    ["i","did","not","like","the","service"],
    ["the","service","was","ok"],
    ["i","was","ignored","when","i","asked","for","service"]
]
{corpus[0],corpus[1],corpus[2]}

有人可以纠正我的错误吗？

# This is my goal - but all in 1 set
set1 = {"i","did","not","like","the","service"}
set2 = {"the","service","was","ok"}
set3 = {"i","was","ignored","when","i","asked","for","service"}
set1&set3

# Even like this it gives the same error, wwhy can't I do it?
set = {
    ["i","did","not","like","the","service"],
    ["the","service","was","ok"],
    ["i","was,"ignored","when","i","asked","for","service"]


}

Answer 1

您正在寻找：

corpus = [
    ["i","did","not","like","the","service"],
    ["the","service","was","ok"],
    ["i","was","ignored","when","i","asked","for","service"]
]

intersection = set.intersection(*map(set, corpus))

或者，更直白地说：

intersection = set(corpus[0]) & set(corpus[1]) & set(corpus[2])

Answer 2

你应该使用：

data = list(sum(corpus, [])) # this will convert 2d into single D list
result = set(data)

或

results = set(list(sum(corpus, [])))

从 3 个列表构建一个集合 - Python

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