invert 2 items in a list Python

Question

I'm building a Formula1 race simulator in python and I'm trying to make a overtake function, basically, i've all the drivers stored in a list and once one of the drivers surpasses the other I need to invert their position in the list

['hamilton','vertsappen','perez','sainz']
['hamilton','perez','verstappen','sainz']

is there any way to do so?

since now I have tried to store the original positions in a temporary variable but I keep finding myself with duplicates in the list

original temporary variables

overtaken temp = Valteri Bottas
overtaker temp = Nicholas Latifi

after the inverting

overtaken temp = Valteri Bottas
overtaker temp = Valteri Bottas

can you mutate the existing list or do you need to create a new one and keep the original position as-is? — hlin03, Dec 04 '22 at 11:32

score 1 · Accepted Answer · answered Dec 04 '22 at 11:16

1

A lazy way to do it.

a = ['hamilton','vertsappen','perez','sainz']

a.remove('vertsappen')

a.insert(2, 'vertsappen')

print(a)

#['hamilton','perez','verstappen','sainz']

answered Dec 04 '22 at 11:16

ricogordo

36
2

score 0 · Answer 2 · answered Dec 04 '22 at 11:11

0

i solved the problem, it was much easier then i thought:

grid[0], grid[1] = grid[1] = grid[0]

answered Dec 04 '22 at 11:11

william serangeli

17
5

There's a typo. It should be `grid[1], grid[0]` – Tomerikoo Dec 04 '22 at 15:46

invert 2 items in a list Python

2 Answers2