How to make the items in a list run forever - python

Question

my_favourite_fruits = ["apple","orange","pear"]
i = 0
while(True):
  print(my_favourite_fruits[i])
  i = i+1

This code currently prints the 3 list items, then crashes because there are no more list items to be printed. How do I get these to be printed over and over, using a while loop?

Answer 1

No need to count anything manually. Having a number hanging out doesn't necessarily mean anything, so handle the incoming data regardless of size and iterate with a nested loop.

my_favourite_fruits = ["apple", "orange", "pear"]

while True:
    for fruit in my_favourite_fruits:
        print(fruit)

Note that the while loop will continue forever since there is no exit condition, so that must be handled separately.

Answer 2

itertools.cycle in Python's standard library was made just for cases like this:

from itertools import cycle    

my_favourite_fruits = ["apple", "orange", "pear"]
endless_fruits = cycle(my_favourite_fruits)
while(True):
    print(next(endless_fruits))