- 交集：（& 或者 intersection）
set1 = {1, 2, 4, 5}
set2 = {4, 5, 7, 8}
print(set1 & set2)
>>>{4, 5}
print(set1.intersection(set2))
>>>{4, 5}
- 并集：（| 或者 union）
set1 = {1, 2, 4, 5}
set2 = {4, 5, 7, 8}
print(set1 | set2)
>>>{1, 2, 4, 5, 7, 8}
print(set1.union(set2))
>>>{1, 2, 4, 5, 7, 8}
- 差集：（- 或者 difference）
set1 = {1, 2, 4, 5}
set2 = {4, 5, 7, 8}
print(set1 - set2)
>>>{1, 2}
print(set2 - set1)
>>>{8, 7}
print(set1.difference(set2))
>>>{1, 2}
print(set2.difference(set1))
>>>{8, 7}
- 反交集：（^ 或者 symmetric_difference）
set1 = {1, 2, 4, 5}
set2 = {4, 5, 7, 8}
print(set1 ^ set2)
>>>{1, 2, 7, 8}
print(set1.symmetric_difference(set2))
>>>{1, 2, 7, 8}
- *子集与超集：（>或者issubset，
Original: https://www.cnblogs.com/amwkvi/p/13168990.html
Author: amwkvi
Title: Python 集合相关知识
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