Re: Dynamic Zero Padding.

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From	Terry Reedy <tjreedy@udel.edu>
Subject	Re: Dynamic Zero Padding.
Date	Tue, 07 Jun 2011 22:56:42 -0400
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On 6/7/2011 7:05 PM, John Posner wrote:

> You might want to try "new style" string formatting [1], which I think
> is better than the "old style" in this particular case:
>
>      >>> "Testing {0:0{1}d}".format(42, 4)
>     'Testing 0042'
>      >>> "Testing {0:0{1}d}".format(42, 9)
>     'Testing 000000042'

One cannot use a nested field in the 'name' part of the field (before 
the ':' (I tried), but are pretty free to nest in the actual 
specification part after the ':'.

 >>> '{0:{1}}'.format(7,'b')
'111'
 >>> '{0:{1}}'.format(7,'d')
'7'

-- 
Terry Jan Reedy

Thread

Dynamic Zero Padding. Friedrich Clausen <fred@derf.nl> - 2011-06-07 23:36 +0200
  Re: Dynamic Zero Padding. Mel <mwilson@the-wire.com> - 2011-06-07 17:43 -0400
    Re: Dynamic Zero Padding. Chris Angelico <rosuav@gmail.com> - 2011-06-08 09:26 +1000
    Re: Dynamic Zero Padding. Terry Reedy <tjreedy@udel.edu> - 2011-06-07 22:56 -0400
    Re: Dynamic Zero Padding. Friedrich Clausen <fred@derf.nl> - 2011-06-08 09:00 +0200
  Re: Dynamic Zero Padding. harrismh777 <harrismh777@charter.net> - 2011-06-07 16:55 -0500

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