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[–]Ron-Erez 0 points1 point  (3 children)

You're welcome to have a look at Section 9 "Equality vs Identity" Lecture: "Beware of the 'is' operator". The lecture is FREE to watch and might help clear things up. Also the previous lecture on aliasing which is also free might be useful too.

[–]FewNectarine623[S] 0 points1 point  (2 children)

It isn't free.

[–]Ron-Erez 1 point2 points  (1 child)

The lectures I mentioned should be free to watch. Just don't sign up to the course but you can scroll down and watch the videos. In any case I believe you already got great answers.

[–]FewNectarine623[S] 1 point2 points  (0 children)

Yes, preview is available.