Swapping two elements in Python

Question

I was watching a video where all of a sudden the instructor uses the given code to swap two elements of a list L:

L[suffix], L[i] = L[i], L[suffix]

What is the procedure undertaken inside for this method of swap? Is a new list formed? Or a tuple? Or a dictionary? Or something else???

https://stackoverflow.com/questions/20582977/python-swapping-lists — i.n.n.m, Dec 09 '17 at 16:33
[This is the answer you are looking for](https://stackoverflow.com/a/14836456/1622937) — j-i-l, Dec 09 '17 at 16:35

score 1 · Answer 1 · answered Dec 09 '17 at 16:35

1

It's easy to understand

>>> L = [0,4]
>>> L[0],L[1] = L[1],L[0]
>>> L
[4, 0]

Or this example,in this case you swap first and third element

>>> P = [0,4,9]
>>> P[0],P[2] = P[2],P[0]
>>> P
[9, 4, 0]

answered Dec 09 '17 at 16:35

Richard Rublev

3

To what extend does this explain what is happening? – j-i-l Dec 09 '17 at 16:36

1 Answers1