Add element to the end of the list while moving rest one place back

Question

so I have an empty list:

my_list = []

I will be adding elements in an infinite loop function, one element each iteration. The list needs to be limited to the max of 10 elements.

Im looking for an effective way to add new elements, while moving old elements one index back.

Ex:

my_list = [0,1,2,3,4,5,6,7,8,9]

and after using (probably):

my_list.append('10')

I wish to see a list like this:

my_list = [1,2,3,4,5,6,7,8,9,10]

(first element was removed, rest were taken one place back)

Thanks in advance!

@StefvanderZon, `new_list = my_list[1:] + [10]` will work – Olvin Roght Sep 26 '19 at 11:59 — Olvin Roght, Sep 26 '19 at 11:59

score 5 · Accepted Answer · answered Sep 26 '19 at 11:56

5

Looks like you want a deque:

from collections import deque

my_list = [0,1,2,3,4,5,6,7,8,9]

d = deque(my_list, maxlen=len(my_list))
d.append(10)
print(d)
# deque([1, 2, 3, 4, 5, 6, 7, 8, 9, 10], maxlen=10)

answered Sep 26 '19 at 11:56

yatu

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just wanted to post :D lightning speed – Olvin Roght Sep 26 '19 at 11:57

Add element to the end of the list while moving rest one place back

1 Answers1