删除两组python3中的常见字符串元素

Question

我试图弄清楚如何删除两组中的常用值。

set1={":dog","cat","mouse"}
set2={"bird","dog","house","fish"}

所以结果只是{"cat","mouse","bird","house","fish"}。

我正在查看堆栈溢出并找到了这个 Removing the common elements between two lists 但是我不确定它是否特定于数字或类似旧的python格式，因为它不起作用。

在我的代码中，我首先通过执行

删除了set1

line = re.sub('[:]', '', str(set1))

然后我做了：

res=list(set(line)^set(set2))

我也试过

res=list(line^set2)

但输出很奇怪

[',', 'u', 'c', '{', "'", 'o', 's', 'g', 'house', 'd', 't', 'bird', 'fish', 'm', 'dog', 'a', 'e', ' ', '}']

Answer 1

有几种方法：

set1 = {":dog", "cat", "mouse"}
set2 = {"bird", "dog", "house", "fish"}

set1 = {k.replace(':', '') for k in set1}

# 3 equivalent methods

set1 ^ set2
set1.symmetric_difference(set2)
(set1 | set2) - (set1 & set2)

# {'bird', 'cat', 'fish', 'house', 'mouse'}