how to use joing every two letters in python code example

Example 1: how to concat join 2 strings in python

str1 = “Hello”
str2 = “World”
str1 + str2

Example 2: combine two strings python

>>> orig_string = 'Hello'
>>> orig_string + ', world'
'Hello, world'
>>> orig_string
'Hello'
>>> full_sentence = orig_string + ', world'
>>> full_sentence
'Hello, world'