Simple string formatting question

[Fredrik Lundh]

Steven D'Aprano wrote:

> Here is a (quick and dirty) reference implementation:
>
> def format(f, width=3):
>     fs = '%%.%df' % width
>     s = fs % f
>     return s.rstrip('0').rstrip('.')
>
> Is there a way of getting the same result with just a
> single string format expression?

not with % itself, but you can do it all in one line:

def format(f, width=3): return ("%.*f" % (width, f)).rstrip(".0")

</F>