I tried with a topic of lists

Question

num=[7,7,7,7,7]
num[2]=num
print(num)
....as ouput I got
[7,7,[...],7,7]
..can anyone plz explain reason for [...] This

Answer 1

Priya You're welcome.

Answer 2

You created a self-referencing list...

Edit. Try to print num[2], num[2][2], num[2][2][2]....

Answer 3

Priya It isn't giving output as [7,7,[7,7,7,7,7],7,7] because everytime the element at index 2 is the list itself.

it would look something like

[7,7,[7,7,[7,7,[7,7,[7,7,[.......],7,7],7,7],7,7],7,7],7,7]

if you want to see it with variable name
it would be

num = [7,7,num,7,7]

where num is again [7,7,num,7,7]
and this continues.

You can say it is infinite.
It will be a self referencing list as Mihai Apostol said.

Answer 4

Why it isn't giving output as [7,7,[7,7,7,7,7],7,7] ?????????

Answer 5

Thanks a lot both of u to clear my doubt