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Re: Where is 'palindrome' defined?

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Date Sun, 31 May 2015 23:55:20 -0700
From Gary Herron <gherron@digipen.edu>
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On 05/31/2015 09:46 PM, fl wrote:
> Hi,
>
> When I search solution of reverse a string/number, I came across a short
> function online:
>
>>>> def palindrome(num):
> 	return str(num) == str(num)[::-1]
>
> I thought that it is a general function. And with the following variable:

No, this  function is not built into Python because  ...  Well it's hard 
to say why.  It's not very general, or not useful to many programmers, 
or nobody's thought about it or made a case for including it in Python, etc.

But that should be no problem.  You can define it yourself (by entering 
the two line you have above).  Then it will be defined, and calling
     parlindrome('...')
will produce a result rather than an error.

Gary Herron


>
>>>> a
> '1234_5555'
>
>>>> parlindrome(a)
> Traceback (most recent call last):
>    File "<pyshell#126>", line 1, in <module>
>      parlindrome(a)
> NameError: name 'parlindrome' is not defined
>
>
> Then, I find that parlindrome is a special checking mirrored word.
> I use Python 2.7.9. Why does the error message show
>
> name 'parlindrome' is not defined
>
>
>
> Thanks,


-- 
Dr. Gary Herron
Department of Computer Science
DigiPen Institute of Technology
(425) 895-4418

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Thread

Where is 'palindrome' defined? fl <rxjwg98@gmail.com> - 2015-05-31 21:46 -0700
  Re: Where is 'palindrome' defined? Gary Herron <gherron@digipen.edu> - 2015-05-31 23:55 -0700
    Re: Where is 'palindrome' defined? Grant Edwards <invalid@invalid.invalid> - 2015-06-01 15:02 +0000
  Re: Where is 'palindrome' defined? Larry Hudson <orgnut@yahoo.com> - 2015-05-31 23:56 -0700
  Re: Where is 'palindrome' defined? David Palao <dpalao.python@gmail.com> - 2015-06-01 08:58 +0200
    Re: Where is 'palindrome' defined? Marko Rauhamaa <marko@pacujo.net> - 2015-06-01 12:21 +0300
      Re: Where is 'palindrome' defined? David Palao <dpalao.python@gmail.com> - 2015-06-01 11:41 +0200
      Re: Where is 'palindrome' defined? John Ladasky <john_ladasky@sbcglobal.net> - 2015-06-02 14:14 -0700
        Re: Where is 'palindrome' defined? Marko Rauhamaa <marko@pacujo.net> - 2015-06-03 01:30 +0300
  Re: Where is 'palindrome' defined? Omar Abou Mrad <omar.aboumrad@gmail.com> - 2015-06-01 10:00 +0300
  Re: Where is 'palindrome' defined? Denis McMahon <denismfmcmahon@gmail.com> - 2015-06-01 15:17 +0000
  Re: Where is 'palindrome' defined? fl <rxjwg98@gmail.com> - 2015-06-01 17:55 -0700
    Re: Where is 'palindrome' defined? sohcahtoa82@gmail.com - 2015-06-01 18:07 -0700
    Re: Where is 'palindrome' defined? MRAB <python@mrabarnett.plus.com> - 2015-06-02 02:10 +0100

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