When does using swapcase twice not return an identical answer?

This video explains
When does using swapcase twice not return an identical answer?

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Music by Eric Matyas
https://www.soundimage.org
Track title: Popsicle Puzzles

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Chapters
00:00 Question
00:53 Accepted answer (Score 25)
01:37 Answer 2 (Score 14)
03:40 Answer 3 (Score 9)
04:07 Thank you

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Full question
https://stackoverflow.com/questions/2069...

Question links:
[str.swapcase()]: http://docs.python.org/3/library/stdtype...
[here]: http://geertvanderploeg.com/unicode-gen/

Accepted answer links:
[(U+00B5)]: http://www.fileformat.info/info/unicode/...
[(U+03BC)]: http://www.fileformat.info/info/unicode/...

Answer 2 links:
[ß]: http://en.wikipedia.org/wiki/%C3%9F

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Tags
#python

#avk47