Shouldn't %06s zero-pad a string?

[Jp Calderone]

On Thu, Feb 13, 2003 at 11:09:02PM +0100, Beat Bolli wrote:
> Jeff Epler wrote:
> >Python generally takes inspiration for the handling of %-formats from
> >the C standard.
> >
> >[Tests snipped]
> >
> >Here's what my printf manual page says about '0':
> >
> >       0      The value should be zero padded.  For d, i,  o,  u,
> >              x,  X,  a, A, e, E, f, F, g, and G conversions, the
> >              converted value is padded on the  left  with  zeros
> >              rather  than  blanks.   If  the  0 and - flags both
> >              appear, the 0 flag is ignored.  If a  precision  is
> >              given with a numeric conversion (d, i, o, u, x, and
> >              X), the 0 flag is ignored.  For other  conversions,
> >              the behavior is undefined.
> >
> >so "the behavior is undefined" when the s conversion is used.
> >The treatment of 0 as " " (space) seems fairly useful, though.
> >
> That's all fine, but the *Python* manual mentions no such limitation. 
> Wouldn't be simpler to handle all cases consistently?

  Simpler for whom?  (Answer this one in your head, please)

  If all you want is a string padded with zeros, use str.zfill().

  Jp

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