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Re: Simple exercise

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From Mark Lawrence <breamoreboy@yahoo.co.uk>
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Subject Re: Simple exercise
Date Fri, 11 Mar 2016 02:03:05 +0000
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On 11/03/2016 01:45, BartC wrote:
> On 11/03/2016 01:21, Mark Lawrence wrote:
>> On 11/03/2016 00:05, BartC wrote:
>
>>> def last(a):
>>>      return a[-1]
>>>
>>> def init(a):                 # all except last element
>>>      return a[0:len(a)-1]
>>
>> What is wrong with a[0:1] ?
>
> The returns the head of the list. I need everything except the last
> element ('init' is from Haskell).

I missed out one character, it should of course have been:-

a[0:-1]

>
>>> for i in range(len(names)):
>>>      print (names[i],totals[i])
>>>
>>
>> Always a code smell when range() and len() are combined.
>
> Any other way of traversing two lists in parallel?
>

Use zip(), but as I suggested in my earlier reply there are better data 
structures than two lists in parallel for this problem.

-- 
My fellow Pythonistas, ask not what our language can do for you, ask
what you can do for our language.

Mark Lawrence

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Thread

Simple exercise Rodrick Brown <rodrick.brown@gmail.com> - 2016-03-10 04:02 -0500
  Re: Simple exercise Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-03-10 11:30 +0100
    Re: Simple exercise Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-03-10 12:07 +0100
    Re: Simple exercise Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-03-10 17:05 +0100
      Re: Simple exercise Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-03-10 17:08 +0100
  Re: Simple exercise Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2016-03-11 12:24 +1300
    Re: Simple exercise Chris Angelico <rosuav@gmail.com> - 2016-03-11 10:38 +1100
  Re: Simple exercise BartC <bc@freeuk.com> - 2016-03-11 00:05 +0000
    Re: Simple exercise Mark Lawrence <breamoreboy@yahoo.co.uk> - 2016-03-11 01:21 +0000
      Re: Simple exercise BartC <bc@freeuk.com> - 2016-03-11 01:45 +0000
        Re: Simple exercise Larry Martell <larry.martell@gmail.com> - 2016-03-10 20:53 -0500
        Re: Simple exercise "Martin A. Brown" <martin@linux-ip.net> - 2016-03-10 17:56 -0800
        Re: Simple exercise Mark Lawrence <breamoreboy@yahoo.co.uk> - 2016-03-11 02:03 +0000
          Re: Simple exercise BartC <bc@freeuk.com> - 2016-03-11 02:18 +0000
          Re: Simple exercise Rick Johnson <rantingrickjohnson@gmail.com> - 2016-03-14 07:35 -0700
            Re: Simple exercise Oscar Benjamin <oscar.j.benjamin@gmail.com> - 2016-03-14 15:06 +0000
              Re: Simple exercise Rick Johnson <rantingrickjohnson@gmail.com> - 2016-03-14 09:00 -0700
              Re: Simple exercise Steven D'Aprano <steve@pearwood.info> - 2016-03-15 10:59 +1100
                Re: Simple exercise Jussi Piitulainen <jussi.piitulainen@helsinki.fi> - 2016-03-15 07:26 +0200
                Re: Simple exercise Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2016-03-15 19:39 +1100
                Re: Simple exercise Chris Angelico <rosuav@gmail.com> - 2016-03-15 19:53 +1100
                Re: Simple exercise Jussi Piitulainen <jussi.piitulainen@helsinki.fi> - 2016-03-15 11:04 +0200
                Re: Simple exercise Oscar Benjamin <oscar.j.benjamin@gmail.com> - 2016-03-15 11:09 +0000
            Re: Simple exercise Ian Kelly <ian.g.kelly@gmail.com> - 2016-03-14 09:16 -0600
              Re: Simple exercise Rick Johnson <rantingrickjohnson@gmail.com> - 2016-03-14 09:11 -0700
            Re: Simple exercise Mark Lawrence <breamoreboy@yahoo.co.uk> - 2016-03-14 15:23 +0000
            Re: Simple exercise Peter Otten <__peter__@web.de> - 2016-03-14 17:00 +0100
        Re: Simple exercise Mark Lawrence <breamoreboy@yahoo.co.uk> - 2016-03-11 02:05 +0000
      Re: Simple exercise Rick Johnson <rantingrickjohnson@gmail.com> - 2016-03-14 07:07 -0700
        Re: Simple exercise Larry Martell <larry.martell@gmail.com> - 2016-03-14 10:13 -0400
        Re: Simple exercise alister <alister.ware@ntlworld.com> - 2016-03-14 14:18 +0000
          Re: Simple exercise Rick Johnson <rantingrickjohnson@gmail.com> - 2016-03-14 08:22 -0700
            Re: Simple exercise MRAB <python@mrabarnett.plus.com> - 2016-03-14 15:57 +0000
    Re: Simple exercise Chris Kaynor <ckaynor@zindagigames.com> - 2016-03-10 18:14 -0800
  Re: Simple exercise boffi <boffi@casa.sua> - 2016-03-17 22:28 +0100

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