Unexpected list behavior in Python

Question

I wanted to reverse a list, and I managed to do so, but in the middle of the work I noticed something strange. The following program works as expected but uncommeting line <

Answer 1

list_reversed = list does not make a copy of list. It just makes list_reversed a new name pointing to the same list. You can see any number of other questions about this on this site, some list in the related questions to the right.