How to add/subtract from elements in a list of integers

Question

I want to first convert strings of a list to integers and then add 1 to all elements, for example:

mylist = ["0", "1", "2"]
ints = [int(item) for item in mylist]
ints = ints+1
print(ints)

and then I want the output to be:

1, 2, 3

Not sure how I can do this, some help would be appreciated

If you want to be able to do that sort of thing, you would be better off with a numpy array rather than a list. — alani, Dec 02 '21 at 18:24
@sahasrara62 Yes that's the direct answer to the question as stated (or near enough - in relation to the existing `ints` rather than the original `mylist` it is `ints = [item+1 for item in ints]`) but it's not going to be a convenient or efficient approach if it is going to be needed extensively. — alani, Dec 02 '21 at 18:28
depend upon usecase. for small case it will be fine, other wise for large cases it won't be — sahasrara62, Dec 02 '21 at 18:29

score 0 · Accepted Answer · answered Dec 02 '21 at 18:26

0

something like this

mylist = ["0", "1", "2"]
ints = [int(item)+1 for item in mylist]

print(ints)

answered Dec 02 '21 at 18:26

eshirvana

score 0 · Answer 2 · answered Dec 02 '21 at 18:48

0

You can use NumPy to solve this problem

import numpy as np
myList = ["0","1","2"]
myArray = np.array(myList, dtype=int) + 1
print(myArray)

answered Dec 02 '21 at 18:48

Buddy Bob

2 Answers2