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Re: (Learner-here) Lists + Functions = headache

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On Sunday, May 5, 2013 9:24:44 PM UTC-4, Bradley Wright wrote:
> On Sunday, May 5, 2013 9:21:33 PM UTC-4, alex23 wrote:
> 
> > On May 6, 10:59 am, Bradley Wright <bradley.wright....@gmail.com>
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> > 
> 
> > wrote:
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> > 
> 
> > > def fizz_cout(x):
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> > 
> 
> > >     count = 0
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> > 
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> > >     for item in x:
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> > 
> 
> > >         while item == "fizz":
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> > 
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> > >             count += 1
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> > 
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> > >             return count
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> > 
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> > >
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> > 
> 
> > > Please remember that i am a eager beginner, where am i going wrong?
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> > 
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> > 
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> > 
> 
> > There are several problems with your code:
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> > 
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> > 
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> > 
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> > >     for item in x:
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> > 
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> > >         while item == "fizz":
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> > 
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> > >             count += 1
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> > 
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> > 
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> > 
> 
> > The `for` takes an item out of the list `x`. If that item is the
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> > 
> 
> > string 'fizz', it increments count. As it's a `while` loop, it will
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> > 
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> > continue to increment for as long as `item` is 'fizz'. Since the while
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> > 
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> > loop doesn't look up another list item, it will remain as 'fizz' until
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> > 
> 
> > the end of time. Well, it would except for your second bug:
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> > 
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> > 
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> > 
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> > >         while item == "fizz":
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> > 
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> > >             count += 1
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> > 
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> > >             return count
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> > 
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> > 
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> > The very first time it encounters a list item that is 'fizz', it adds
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> > 
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> > one to `count`, then exits the function passing back `count`.
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> > 
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> > You want to move the return to _outside_ the for loop, and you want to
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> > 
> 
> > change your `while` condition to an `if` instead.
> 
> 
> 
> Thank you Alex - much appreciated, about to implement right now!

Aha! lessons learned - got it!

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(Learner-here) Lists + Functions = headache Bradley Wright <bradley.wright.biz@gmail.com> - 2013-05-05 17:59 -0700
  Re: (Learner-here) Lists + Functions = headache alex23 <wuwei23@gmail.com> - 2013-05-05 18:21 -0700
    Re: (Learner-here) Lists + Functions = headache Bradley Wright <bradley.wright.biz@gmail.com> - 2013-05-05 18:24 -0700
      Re: (Learner-here) Lists + Functions = headache Bradley Wright <bradley.wright.biz@gmail.com> - 2013-05-05 18:30 -0700
        Re: (Learner-here) Lists + Functions = headache Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-05-06 10:25 +0100
  Re: (Learner-here) Lists + Functions = headache Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-05-06 01:31 +0000
    Re: (Learner-here) Lists + Functions = headache Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-05-06 01:48 +0000
  Re: (Learner-here) Lists + Functions = headache Terry Jan Reedy <tjreedy@udel.edu> - 2013-05-05 21:30 -0400
  Re: (Learner-here) Lists + Functions = headache 88888 Dihedral <dihedral88888@googlemail.com> - 2013-05-05 22:39 -0700
    Re: (Learner-here) Lists + Functions = headache Chris Angelico <rosuav@gmail.com> - 2013-05-06 17:32 +1000

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