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Date: Tue, 02 Jun 2015 02:10:54 +0100
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Subject: Re: Where is 'palindrome' defined?
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Xref: csiph.com comp.lang.python:91751

On 2015-06-02 01:55, fl wrote:
> On Sunday, May 31, 2015 at 9:46:56 PM UTC-7, 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:
>>
>> >>> 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,
>
> Thanks, I realize that it was spelled wrong. Now, with the correct spelling
> the result is a 'False'. I have expected it gives reversed string. Is the
> function behaves correct or not?
>
>
It compares 'num' as a string to the reverse of that to test whether 
it's a palindrome,
so, yes, it's behaving correctly.

Perhaps its purpose would have been clearer if it had been called
"is_palindrome".

>
>>>> a='1234'
>>>> def palindrome(num):
> 	return str(num) == str(num)[::-1]
>>>> palindrome(a)
> False
>>>> palindrome("fread")
> False
>