python - Python symmetric_difference とは何ですか? XOR 操作とはどう違うのですか?

Question

http://www.learnpython.org/en/Setsから Python を学習しているときに、セット間の symmetric_difference の概念に遭遇しました。セットの「排他的または」操作と同じ出力が得られると思いました。どう違うの？

Answer 1

Yes, it is pretty much the same, just XOR is an operation on booleans, and symmetric_difference is an operation on sets. Actually, even your linked documentation page says this:

To find out which members attended only one of the events, use the "symmetric_difference" method

You can also see this more detailed mathematical explanation about relationship between logical XOR and symmetric difference on sets.