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Python Python Collections (2016, retired 2019) Sets Set Math

Posted by ds1
ds1
7,627 Points

Question on Sets

At the end of the video, Kenneth mentions that with the exception of union and symmetric difference, order matters. However, order wouldn't matter for intersection, would it? (Seems like order only matters for difference.)

2 Answers

Jeff Muday
MOD
Jeff Muday
Treehouse Moderator 28,716 Points
Jeff Muday
Jeff Muday
Treehouse Moderator 28,716 Points

You are correct, order should not matter for intersection.

Here is a stack overflow link that shows an example of the "gotcha" that can happen when you do a set difference (-) rather that the symmetric_difference.

https://stackoverflow.com/questions/3462143/get-difference-between-two-lists

ds1
ds1
7,627 Points
ds1
ds1
7,627 Points

Thanks, Jeff!