but wouldn't it join all the spaces together with an added space?

It does, doing ' '.join will return its original whitespaces (separator of the values).

str.split separates the substring into values inside a list. i.e:

'I  am a boi'.split(' ') ---> ['I', '', 'am', 'a', 'boi']
' '.join(['I', '', 'am', 'a', 'boi']) ---> 'I  am a boi'

It'd be different if you leave the args as default tho

'I  am a boi'.split() ---> ['I', 'am', 'a', 'boi']
' '.join(['I', 'am', 'a', 'boi']) ---> 'I am a boi'

but wouldn't it join all the spaces together with an added space?

I'm a bit confused. Doesn't split(" ") take away spaces?

Because the solution is using ' '.join

I'm confused. How does this copy over the extra spaces? When you use split(" ") doesn't it mess up all of the spacing?

Very poorly worded instructions. Had to skip