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Groups > comp.lang.python > #38226

Re: Issue with my code

Newsgroups comp.lang.python
Date 2013-02-05 12:19 -0800
References <2b0eb097-e575-4d6d-a509-f4c6bd58c934@googlegroups.com> <mailman.1379.1360090617.2939.python-list@python.org> <db762eb7-0901-4feb-bdf8-ac14aca4a711@googlegroups.com> <mailman.1384.1360093449.2939.python-list@python.org>
Message-ID <fca6e15e-b386-4d6d-954f-5647453c3228@googlegroups.com> (permalink)
Subject Re: Issue with my code
From maiden129 <sengokubasarafever@gmail.com>

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How to reverse the two loops?

On Tuesday, February 5, 2013 2:43:47 PM UTC-5, Dave Angel wrote:
> On 02/05/2013 02:20 PM, maiden129 wrote:
> 
> > On Tuesday, February 5, 2013 1:56:55 PM UTC-5, marduk wrote:
> 
> >> On Tue, Feb 5, 2013, at 01:38 PM, maiden129 wrote:
> 
> >>
> 
> <Snipping double-spaced googlegroups trash>
> 
> >
> 
> > when I removed "s.remove(i), it starts to repeat the number of occurrences too
> 
> >
> 
> > many times like this:
> 
> >
> 
> > 2 occurs 3 times.
> 
> > 2 occurs 3 times.
> 
> > 3 occurs 3 times.
> 
> > 3 occurs 3 times.
> 
> > 2 occurs 3 times.
> 
> > 2 occurs 3 times.
> 
> > 5 occurs 1 time.
> 
> > 3 occurs 3 times.
> 
> > 3 occurs 3 times.
> 
> > 4 occurs 1 time.
> 
> > 3 occurs 3 times.
> 
> > 3 occurs 3 times.
> 
> > 1 occurs 1 time.
> 
> > 2 occurs 3 times.
> 
> > 2 occurs 3 times.
> 
> >
> 
> > How can I stop this?
> 
> >
> 
> 
> 
> As MRAB pointed out, don't delete items from a list you're iterating 
> 
> over.  It can make the iterator go nuts.  He suggests the collections 
> 
> module.
> 
> 
> 
> But if you want to do it by hand, one approach is to reverse the two 
> 
> loops.  Iterate over the characters in CheckS list, examining the entire 
> 
> s list for each one and figuring out how many times the character occurs.
> 
> 
> 
> Another approach is to build a dict, or a defaultdict, to keep counts 
> 
> for each of the characters in CheckS.
> 
> 
> 
> -- 
> 
> DaveA

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Thread

Issue with my code maiden129 <sengokubasarafever@gmail.com> - 2013-02-05 10:38 -0800
  Re: Issue with my code maiden129 <sengokubasarafever@gmail.com> - 2013-02-05 10:43 -0800
  Re: Issue with my code marduk <marduk@python.net> - 2013-02-05 13:56 -0500
    Re: Issue with my code maiden129 <sengokubasarafever@gmail.com> - 2013-02-05 11:20 -0800
      Re: Issue with my code Dave Angel <davea@davea.name> - 2013-02-05 14:43 -0500
        Re: Issue with my code maiden129 <sengokubasarafever@gmail.com> - 2013-02-05 12:19 -0800
        Re: Issue with my code maiden129 <sengokubasarafever@gmail.com> - 2013-02-05 12:19 -0800
          Re: Issue with my code darnold <darnold992000@yahoo.com> - 2013-02-05 13:37 -0800
            Re: Issue with my code marduk <marduk@python.net> - 2013-02-05 17:05 -0500
              Re: Issue with my code darnold <darnold992000@yahoo.com> - 2013-02-05 14:25 -0800
    Re: Issue with my code maiden129 <sengokubasarafever@gmail.com> - 2013-02-05 11:20 -0800
  Re: Issue with my code MRAB <python@mrabarnett.plus.com> - 2013-02-05 19:06 +0000
  Re: Issue with my code Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2013-02-05 17:20 -0500
  Re: Issue with my code Terry Reedy <tjreedy@udel.edu> - 2013-02-05 19:06 -0500
  Re: Issue with my code rusi <rustompmody@gmail.com> - 2013-02-05 22:29 -0800
    Re: Issue with my code rusi <rustompmody@gmail.com> - 2013-02-05 22:32 -0800

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