Why is a boolean comparison with "is" so terrible?

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Chapters
00:00 Question
02:02 Accepted answer (Score 2)
03:31 Answer 2 (Score 5)
04:13 Thank you

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Full question
https://stackoverflow.com/questions/6229...

Question links:
[PEP 8]: https://www.python.org/dev/peps/pep-0008...
[Is there a difference between "==" and "is"?]: https://stackoverflow.com/questions/1329...

Answer 1 links:
[category mistake]: https://en.wikipedia.org/wiki/Category_m...

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Tags
#python #boolean #booleanexpression

#avk47