make a string a list

[Nikhil]

or a string iterable ? How can I do that. I have lots of '\r\n' 
characters in the string which I think can be easier if it were made 
into a list and I can easily see if the required value (its a numeral) 
is present in it or not after some position or after some characters' 
position.

Thanks,
Nikhil
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