"Fredrik Lundh" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> 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>
>
>
>
Ooops, don't combine the two calls to rstrip().
def format(f, width=3): return ("%.*f" % (width, f)).rstrip(".0")
print format(3.140)
print format(3.000)
print format(3.0000001)
print format(30.0000)
print format(300000.000)
Gives:
3.14
3
3
3
3
But this works fine:
def format(f, width=3): return ("%.*f" % (width, f)).rstrip("0").rstrip(".")
-- Paul
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