How can I format the string according to its length at runtime?

[Remco Gerlich]

ed_tsang at yahoo.com <ed_tsang at yahoo.com> wrote in comp.lang.python:
> I am trying to supply the precision formating at run time:
> 
> s = 123
> print '(0x%-6X -)'%s
> 
> where I try to dynamically supply the number 6 from (6- length of s), 
> I can't find a way to dynamically supply that. 
> 
> Anyone hav any idea?

s = 123
spacing = 6

print '(0x%*X -)' % (spacing, s)

Ie, use '*'.

-- 
Remco Gerlich