How to divide letters in words into pairs?

Question

Python

I am writing a program for encrypting text in Python, the algorithm requires initially to divide the letters in the words of the text into pairs (Example: "Hello world" -> 'Pr', ''iv, 'et', 'm', 'ir'). Then we turn to the first element from the first pair, then to the second and so on, moving on to the second pair.

Answer 1

>>> import re
>>> re.findall('..?','Hello world')
['R', 'eve', 'em', 'm', 'ir']

Answer 2

s = "Привет мир"
[s[i:i+2] for i in range(0, len(s), 2)]
# ['Пр', 'ив', 'ет', ' м', 'ир']

Answer 3

textwrap.wrap('Hello world' , 2)
['R', 'e', ​​'et', 'mi', 'r']