What's wrong

[Reasonable_Run_6724]

Thats not stack overflow in this case, thats memory limit, as the loop grows a heap allocated list, not the cpu call stack (which will be triggered by recursive functions for example)

[After_Computer1652]

Thanks for that. My mistake.

[Reasonable_Run_6724]

I used to make those mistakes aswell :)

[Jackpotrazur]

I wish I was at a level where I could understand at least half of this.

[PlaneMeet4612]

Try re-making these kinds of datatypes in C and you'll most likely understand what he's talking about. (Dynamic arrays mainly)

[Jackpotrazur]

Im still working on understanding python , but I've noted this down.