how do i insert spaces into a string using the range function?

Question

If I have a string, for example which reads: \'Hello how are you today Joe\' How am I able to insert spaces into it at regular intervals? So for example I want to insert spaces

Answer 1

This does everything!

>>> def insert_spaces(text, s_range):
        return ' '.join(text[start:end] for start, end in 
                        zip([0] + s_range, s_range + [len(text)])).strip()

The question example:

>>> insert_spaces('Hello how are you today Joe', range(0, 27, 2))
'He ll o  ho w  ar e  yo u  to da y  Jo e'

Other examples with different starts, steps and stops:

>>> insert_spaces('Hello how are you today Joe', range(5, 20, 4))
'Hello  how  are  you  today Joe'
>>> insert_spaces('Hello how are you today Joe', range(0, 27))
'H e l l o   h o w   a r e   y o u   t o d a y   J o e'
>>> insert_spaces('abcdefghijklmnopqrstuvwxyz', range(0, 16, 5))
'abcde fghij klmno pqrstuvwxyz'

Answer 2

Just another way to do it

>>> ''.join(e if (i+1)%2 else e+" " for (i,e) in enumerate(list(s)))
'He ll o  ho w  ar e  yo u  to da y  Jo e'

Answer 3

The most straight-forward approach for this particular case is

s = 'Hello how are you today Joe'
s = " ".join(s[i:i+2] for i in range(0, len(s), 2))

This splits the string into chunks of two characters each first, and then joins these chunks with spaces.