String formatting with fixed width

[Steve Holden]

Alexander Eisenhuth wrote:
> Hello alltogether,
> 
> is it possible to format stings with fixed width of let's say 7 character. T 
> need a floating point with 3 chars before dot, padded with ' ' and 3 chars after 
> dot, padded with '0'.
> 
> Followingh is my approach
>  >>> f = 21.1
>  >>> s = "%.03f" % f
>  >>> s
> '21.100'
> 
> But there are missing ' '. How can I get that? (For bigger numbers than 999 they 
> might be cut: 1021 -> 021)
> 
  >>> def f(x):
  ...   return "%7.3f" % (x % 1000.0)
  ...
  >>> for x in (9.9, 99.9, 999.9, 9999.9):
  ...   print f(x)
  ...
   9.900
  99.900
999.900
999.900
  >>>

regards
  Steve
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