PEP proposal: enhanced string functions

[Ken Guest]

On Wed, 2001-11-14 at 13:46, Mikael Olofsson wrote:
> 
> On 14-Nov-2001 Matthew Dixon Cowles wrote:
>  >  I'd prefer to be able to pass a sequence to strip() and have
>  >  any of those characters stripped.
> 
> On 14-Nov-2001 Oliver Fromme wrote:
>  >  For the center() case, it might be useful to optionally
>  >  allow another argument, so you can have different padding
>  >  on the left and on the right.
>  >  
>  >  Example:
>  > >>> string.center(" Title ", 25, ">", "<")
>  >  '>>>>>>>>> Title <<<<<<<<<'
> 
> To conform with Matthew's proposal about strip(), you might want to use
> the same argument for left and right padding in center(), as in
> 
> >>> string.center(" Title ", 25, "><")
>  '>>>>>>>>> Title <<<<<<<<<'

Mikael, I think you're wrong to think that center should only take only
3 parameters. 
What if somebody wants the result to look like "-=-=-=-= Title ......."?

That said, how about having it that:
	1.	When there are 3 parameters, the third parameter is 		used for
padding on both the left and right of " Title"

		eg:
		   >>> string.center(" Title ", , "-=")
		    '-=-=-=-=- Title -=-=-=-=-'

	2.	When there are 4 parameters, the third parameter is used
		for padding on the left of " Title " and the fourth 		parameter is
used for padding on the right.

		eg:
		   >>> string.center(" Title ", , "-=", "#")
		    '-=-=-=-=- Title #########'
k.