[Tutor] creating the equivalent of string.strip()

[Ricardo Aráoz]

Alan Gauld wrote:
> "Ricardo Aráoz" <ricaraoz at gmail.com> wrote
> 
>>> It still won't work. Strings are immutable, you can't use del
>>> to delete a character. Try it.
>> It comes straight from Idle (still warm ;-) ).
>> Notice s = list(s)
> 
> Shame and embarrassment! I read that code through both times and
> never noticed the list conversion either time! I did wonder about the
> join() but just dismissed it as irrelevant.
> 
> Grovelling apologies.
> 

Don't worry, you can imagine MY 'shame and embarrasment' at being
pointed that the while's should go separate as opposed to one within the
other.  87(