Break lines?

[saneman]

Tim Chase wrote:
>> I have made this string:
>>
>> TITLE          = 'Efficiency of set operations: sort model,
>>          (cphstl::set::insert(p,e)^n cphstl::set::insert(e)), integer'
>>
>> But I am not allowed to break the line like that:
>>
>> IndentationError: unexpected indent
>>
>> How do I break a line?
> 
> Depends on what you want.  You can embed running strings with newlines 
> using triple-quotes (either single- or double-quotes):
> 
>  TITLE = """Efficiency...
>    (cphstl:..."""
> 
> 
> Or you can use string concatenation using line-continuations:
> 
>  TITLE = "Efficiency..." \
>    "(cphstl:..."
> 
> or using parens
> 
>  TITLE = ("Efficiency..."
>    "(cphstl:...")
> 
> 
> 
> I like the clean'ness of the first version, but sometimes get irked by 
> it including my leading whitespace (there are some workarounds, but all 
> involve more than trivial effort).  I tend to use the 2nd in the case 
> you describe, but usually using the 3rd version in all other cases where 
> it's as a parameter to a function call or some other bracketed/braced 
> construct.
> 
> -tkc
> 
> 

Ok thanks! Btw why double quotes " instead of single ' ?