Weird code

Question

Can someone please explain the code attached? I don’t understand why the id changes when reassigning list1 a literal.
https://sololearn.com/compiler-playground/cbVN27aHZ9GH/?ref=app

Answer 1

Edward Finkelstein

Just see the result of first 2 print statement. Ids are same because references are same

In 3rd print, result is different because list1 is assigned by new value.

https://sololearn.com/compiler-playground/ckFvUKJEFD9Q/?ref=app

Answer 2

On line 8 list1 will be the local variable it will not affect on reference variable list1 which is passed as a parameter in function. Reference variable id will not change after assigning new variable. That's why sum is 13 but if you return that local variable and assign to list1 then print list1 output would be 18.

Answer 3

If you want to dig a bit deeper into the intricacies of the reference topic, you might read this:

https://sololearn.com/compiler-playground/c89ejW97QsTN/?ref=app

Answer 4

@AJ makes sense thanks

Answer 5

HonFu wow, yeah this is great, thanks!

Answer 6

Yeah, I don’t get it… Could you post an example explaining the last bit plz? I don’t get what the difference between list1 and list1 😅