Hello Everyone! A simple questions!

[Thanatos xiao]

values = [0, 1, 2]>>> values[1] = values>>> values[0, [...], 2]

why??

 

[alex23]

values = [0, 1, 2]
values[1] = values
values

[0, [...], 2]

why??

First, it helps if you tell us what you were expecting instead.

In your example, you have a list where you have replaced the 2nd element
with the list itself. The [...] indicates that it is self-referential;
there is no other way for it to display itself, because the contained
reference also refers to itself.

values[1] [0, [...], 2]
values[1][1] [0, [...], 2]
values[1][1][1][1][1][1][1][1][1] [0, [...], 2]
values[1][1][1][1][1][1][1][1][1] is values

True