IndexError: list index out of range using python

Question

If i have 2 lists, the first list which has 100 values

listNum = list(range(1, 101))

the second list which has 3 values

cars = ["Ford", "Volvo", "BMW"]

If i would like to add listNum values in next to cars which will be like this

for x in listNum:
    car = cars[x]
    print(cars)

output: Ford1, Volvo2

How can i do that? I know I can make the loop like this,

for x in range(3):

But this is exhausting, i want to add a car without adjusting the loop range, every time I add a car I have to change the loop range

for x in range(len(cars)): you can use len of the lists and iterate over it — user15801675
– user15801675, Commented Jun 30, 2021 at 10:55
@Sujay But the numbers in the listNum list are not printed next to the cars BMW1 Volvo2 — Marvel
– Marvel, Commented Jun 30, 2021 at 11:02

Pythocrates · Accepted Answer · 2021-06-30 11:03:19Z

4

The easiest way to implement this use case is to use enumerate:

for i, car in enumerate(cars, start=1):
    print(f'{car}{i}')

answered Jun 30, 2021 at 11:03

Pythocrates

5532 silver badges10 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

score 1 · Accepted Answer · 2021-06-30 11:09:45Z

1

Your best bet is use for x in range(len(cars)):

The len function takes the number of characters or elements in the specified argument. This way, you won't need to update your loop manually.

for x in range(len(cars)):
    car = cars[x]
    print(car,x)

Here is the best solution

for x,y in enumerate(cars, start=1):
    print(x,y)

answered Jun 30, 2021 at 10:58

user15801675

This is the output from you 2nd post: 0 Ford 1 Volvo 2 BMW - please verify your outputs with the PO expected outputs.

@DanielHao, enumerate starts from 0 by default