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Re: python programming help

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To python-list@python.org
From Mark Lawrence <breamoreboy@yahoo.co.uk>
Subject Re: python programming help
Date Sun, 08 Dec 2013 19:21:22 +0000
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On 08/12/2013 19:06, rafaellasav@gmail.com wrote:
> i get it, thanks a lot i wrote a different one and it works
>
> def people(age):
>      people=[name for name in dic if dic[name]==age]
>      print(people)
>
> people(20)
>
> i have one last question
>
> it asks me to test my program function by running these lines:
> print ’Dan’ in people(18) and ’Cathy’ in people(18)
> print ’Ed’ in people(19) and ’Helen’ in people(19) and\
> ’Irene’ in people(19) and ’Jack’ in people(19) and ’Larry’in
> people(19)
> print ’Alice’ in people(20) and ’Frank’ in people(20) and ’Gary’ in
> people(20)
> print people(21) == [’Bob’]
> print people(22) == [’Kelly’]
> print people(23) == []
>
> but when i wrote these lines it returns me an error
> Traceback (most recent call last):
>    File "/Users/rafaellasavva/Desktop/people.py", line 19, in <module>
>      print 'Dan' in people(18) and 'Cathy' in people(18)
> TypeError: argument of type 'NoneType' is not utterable
>
> do you know what it might be wrong?
>

You've typed up the error message instead of using cut and paste, which 
is why it says "utterable" instead of "iterable"? :)  Seriously, it's 
already been pointed out that your people function needs a return 
statement.  Without it, the default returned is always None.

Would you also please read and action this
https://wiki.python.org/moin/GoogleGroupsPython as it prevents us seeing 
huge numbers of unwanted newlines which some find extremely irritating.

-- 
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

python programming help rafaellasav@gmail.com - 2013-12-08 09:59 -0800
  Re: python programming help YBM <ybmess@nooos.fr.invalid> - 2013-12-08 19:07 +0100
    Re: python programming help rafaellasav@gmail.com - 2013-12-08 10:14 -0800
      Re: python programming help YBM <ybmess@nooos.fr.invalid> - 2013-12-08 19:18 +0100
      Re: python programming help Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-12-08 18:25 +0000
      Re: python programming help Christopher Welborn <cjwelborn@live.com> - 2013-12-09 17:34 -0600
  Re: python programming help Roy Smith <roy@panix.com> - 2013-12-08 13:23 -0500
  Re: python programming help Gary Herron <gary.herron@islandtraining.com> - 2013-12-08 10:20 -0800
  Re: python programming help bob gailer <bgailer@gmail.com> - 2013-12-08 13:27 -0500
    Re: python programming help rafaellasav@gmail.com - 2013-12-08 10:32 -0800
      Re: python programming help rafaellasav@gmail.com - 2013-12-08 10:42 -0800
      Re: python programming help Benjamin Kaplan <benjamin.kaplan@case.edu> - 2013-12-08 10:52 -0800
        Re: python programming help rafaellasav@gmail.com - 2013-12-08 11:06 -0800
          Re: python programming help Chris Angelico <rosuav@gmail.com> - 2013-12-09 06:17 +1100
            Re: python programming help rurpy@yahoo.com - 2013-12-08 16:08 -0800
              Re: python programming help Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-12-09 00:27 +0000
                Re: python programming help rurpy@yahoo.com - 2013-12-08 21:07 -0800
                Re: python programming help rusi <rustompmody@gmail.com> - 2013-12-08 21:20 -0800
                Re: python programming help rurpy@yahoo.com - 2013-12-09 21:15 -0800
                Re: python programming help Chris Angelico <rosuav@gmail.com> - 2013-12-09 18:57 +1100
                Re: python programming help rurpy@yahoo.com - 2013-12-09 21:07 -0800
                Re: python programming help Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-12-09 09:34 +0000
                Meta Fight About Posting (was: python programming help) Travis Griggs <travisgriggs@gmail.com> - 2013-12-09 07:44 -0800
                Re: Meta Fight About Posting (was: python programming help) rusi <rustompmody@gmail.com> - 2013-12-09 08:25 -0800
                Re: Meta Fight About Posting (was: python programming help) rusi <rustompmody@gmail.com> - 2013-12-09 08:47 -0800
                Re: Meta Fight About Posting (was: python programming help) Roy Smith <roy@panix.com> - 2013-12-09 13:48 -0500
                Re: Meta Fight About Posting (was: python programming help) Roy Smith <roy@panix.com> - 2013-12-09 13:45 -0500
              Re: python programming help Chris Angelico <rosuav@gmail.com> - 2013-12-09 14:05 +1100
                Re: python programming help rurpy@yahoo.com - 2013-12-08 21:10 -0800
                Re: python programming help Joel Goldstick <joel.goldstick@gmail.com> - 2013-12-09 00:22 -0500
                Re: python programming help Chris Angelico <rosuav@gmail.com> - 2013-12-09 19:15 +1100
                Re: python programming help rurpy@yahoo.com - 2013-12-09 21:10 -0800
                Re: python programming help Chris Angelico <rosuav@gmail.com> - 2013-12-10 16:29 +1100
          Re: python programming help Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-12-08 19:21 +0000
          Re: python programming help Terry Reedy <tjreedy@udel.edu> - 2013-12-08 16:17 -0500
          Re: python programming help YBM <ybmess@nooos.fr.invalid> - 2013-12-09 03:02 +0100
      Re: python programming help John Ladasky <john_ladasky@sbcglobal.net> - 2013-12-08 11:21 -0800
      Re: python programming help Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2013-12-09 13:00 +1300
        Re: python programming help YBM <ybmess@nooos.fr.invalid> - 2013-12-09 02:51 +0100
      Re: python programming help YBM <ybmess@nooos.fr.invalid> - 2013-12-09 03:31 +0100

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