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From: Terry Reedy <tjreedy@udel.edu>
Subject: Re: .format vs. %
Date: Mon, 02 Jan 2012 05:29:58 -0500
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Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:18319

On 1/1/2012 4:11 PM, Miki Tebeka wrote:
>>>>> s = "{0} {1} {2} {3}"
>>>>> s.format(1, 2, 3, 4)
>> '1 2 3 4'
> Or even
>      In [4]: fmt = '{0} {1} {2} {3}'.format
>      In [5]: print(fmt(1, 2, 3, 4))
>      1 2 3 4

I have done this, except for using a more informative name, like 'emsg' 
for error message.
   except XError as e:
     print(emsg(a,b,c,e))
makes for pretty clear code.

-- 
Terry Jan Reedy