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Re: Simple recursive sum function | what's the cause of the weird behaviour?

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On 6 July 2013 13:59, Russel Walker <russ.pobox@gmail.com> wrote:
> Since I've already wasted a thread I might as well...
>
> Does this serve as an acceptable solution?
>
> def supersum(sequence, start=0):
>     result = type(start)()
>     for item in sequence:
>         try:
>             result += supersum(item, start)
>         except:
>             result += item
>     return result

It's probably more robust to do:

def supersum(sequence, start=0):
    for item in sequence:
        try:
            result = result + supersum(item, start)
       except:
            result = result + item
    return result

as that way you aren't assuming the signature of type(start).

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Simple recursive sum function | what's the cause of the weird behaviour? Russel Walker <russ.pobox@gmail.com> - 2013-07-06 05:37 -0700
  Re: Simple recursive sum function | what's the cause of the weird behaviour? Russel Walker <russ.pobox@gmail.com> - 2013-07-06 05:54 -0700
  Re: Simple recursive sum function | what's the cause of the weird behaviour? Russel Walker <russ.pobox@gmail.com> - 2013-07-06 05:59 -0700
    Re: Simple recursive sum function | what's the cause of the weird behaviour? Peter Otten <__peter__@web.de> - 2013-07-06 15:19 +0200
    Re: Simple recursive sum function | what's the cause of the weird behaviour? Joshua Landau <joshua.landau.ws@gmail.com> - 2013-07-06 19:43 +0100
      Re: Simple recursive sum function | what's the cause of the weird behaviour? Rotwang <sg552@hotmail.co.uk> - 2013-07-06 21:10 +0100
        Re: Simple recursive sum function | what's the cause of the weird behaviour? Rotwang <sg552@hotmail.co.uk> - 2013-07-06 21:25 +0100
  Re: Simple recursive sum function | what's the cause of the weird behaviour? Chris Angelico <rosuav@gmail.com> - 2013-07-07 03:22 +1000
  Re: Simple recursive sum function | what's the cause of the weird behaviour? Terry Reedy <tjreedy@udel.edu> - 2013-07-06 14:47 -0400
  Re: Simple recursive sum function | what's the cause of the weird behaviour? Russel Walker <russ.pobox@gmail.com> - 2013-07-07 09:13 -0700
  Re: Simple recursive sum function | what's the cause of the weird behaviour? Russel Walker <russ.pobox@gmail.com> - 2013-07-07 09:44 -0700

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