3.14. Exercise: Increment List

Write a function named increment_list that takes a list of integers and returns a new list with all elements of the argument list incremented by one. You need to make sure that the original list does not change. To achieve this, you will need to make a copy of the original list.

Hint: You can use slicing to get a (shallow) copy of the list.

Sample I/O:

# Use variable assignment to be able to observe the original list
# after the function call

>>> a = [1, 2, 3, 10, 15]
>>> a
[1, 2, 3, 10, 15]
>>> increment_list(a)
[2, 3, 4, 11, 16]
>>> a
[1, 2, 3, 10, 15]