[Python-Dev] Adding start to enumerate()

[Steve Holden]

Steven D'Aprano wrote:
> On Mon, 12 May 2008 08:20:51 am Georg Brandl wrote:
>> I believe the following is a common use-case for enumerate()
>> (at least, I've used it quite some times):
>>
>> for lineno, line in enumerate(fileobject):
>>      ...
>>
>> For this, it would be nice to have a start parameter for enumerate().
> 
> Why would it be nice? What would you use it for?
> 
> The only thing I can think of is printing lines with line numbers, and 
> starting those line numbers at one instead of zero. If that's the only 
> use-case, should it require built-in support?
> 
It's fairly common in financial applications to number checks in 
batches, from a starting point that depends on the number of checks 
issued in previous runs. Having a start point would allow this to be 
done more simply, though it's not anyway what I would call an onerous task.

regards
  Steve
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