list initialize with ?

[Sharan Basappa]

On Saturday, 30 June 2018 17:48:05 UTC+5:30, Steven D'Aprano  wrote:
> On Sat, 30 Jun 2018 04:50:10 -0700, Sharan Basappa wrote:
> 
> > Can anyone explain to me what the ? does here:
> > 
> > ignore_words = ['?']
> 
> Its a question mark inside a string, which is inside a list. You can put 
> anything you like in strings:
> 
>     'a'
> 
>     'abcde'
> 
> even punctuation like '?'. Then you can put the string inside a list.
> 
> What you do with it, I have no idea -- presumably its your code.
> 
> 
> -- 
> Steven D'Aprano
> "Ever since I learned about confirmation bias, I've been seeing
> it everywhere." -- Jon Ronson

oh, ok. I assumed that ? has some special meaning.
I should be able to find out more. 

PS: Actually, its not my code. I am using an online code as reference for my research.