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Re: python programming help

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To python-list@python.org
From Terry Reedy <tjreedy@udel.edu>
Subject Re: python programming help
Date Sun, 08 Dec 2013 16:17:56 -0500
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On 12/8/2013 2:06 PM, rafaellasav@gmail.com wrote:

Even when you do get what lambda means and how use it,
   name = lambda args: expression
which is a carryover from other languages, is inferior to
   def name(args): return expression
because the function object resulting from lambda does not have a proper 
name attribute.

> def people(age):
>      people=[name for name in dic if dic[name]==age]

An alternative is
[name for name, value in dic.itervalues() if value == age]

In Python 3, remove 'iter'. It this is not homework and you are not 
otherwise forced to start with Python 3, I (and some others here) 
recommend starting with Python 3.

-- 
Terry Jan Reedy

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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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