How to add a number to each element of a list in python ?

Examples of how to add a number to each element of a list in python:

Add a number to a list of integers

Add +10 to each integer of a list using a "list comprehension":

>>> l2 = [i+10 for i in l]
>>> l2
[13, 11, 15, 18, 14]

Increment a list of integer numbers:

>>> l = [3,1,5,8,4]
>>> l2 = [i+1 for i in l]
>>> l2
[4, 2, 6, 9, 5]

Add a number to a list of reals

Increment a list of real numbers:

>>> import numpy as np
>>> l = [i for i in np.arange(0,2,0.5)]
>>> l
[0.0, 0.5, 1.0, 1.5]
>>> [i+1 for i in l]
[1.0, 1.5, 2.0, 2.5]

Add a number to a list of strings

Add a number to a list of strings:

>>> s2 = [i+str(10) for i in s]
>>> s2
['coucou10', 'hi10', 'hello10']

Note: it is also possible to add a string to a list of strings:

>>> s = ['coucou', 'hi', 'hello']
>>> s2 = [i+' aaa' for i in s]
>>> s2
['coucou aaa', 'hi aaa', 'hello aaa']

References