On 19/09/12 17:07:04, Alister wrote:
> On Wed, 19 Sep 2012 16:41:20 +0200, Franck Ditter wrote:
>
>> Hello,
>> I wonder why sum does not work on the string sequence in Python 3 :
>>
> sum((8,5,9,3))
>> 25
> sum([5,8,3,9,2])
>> 27
> sum('rtarze')
>> TypeError: unsupported operand type(s
On 9/19/2012 11:07 AM, Alister wrote:
Summation is a mathematical function that works on numbers
Concatenation is the process of appending 1 string to another
although they are not related to each other they do share the same
operator(+) which is the cause of confusion.
If one represents coun
On Sep 19, 11:34 am, Ian Kelly wrote:
> On Wed, Sep 19, 2012 at 9:37 AM, Steve Howell wrote:
> > Sequences are iterables, so I'd say the docs are technically correct,
> > but maybe I'm misunderstanding what you would be trying to clarify.
>
> The doc string suggests that the argument to sum() mus
On Wed, Sep 19, 2012 at 9:37 AM, Steve Howell wrote:
> Sequences are iterables, so I'd say the docs are technically correct,
> but maybe I'm misunderstanding what you would be trying to clarify.
The doc string suggests that the argument to sum() must be a sequence,
when in fact any iterable will
On Wed, 19 Sep 2012 15:07:04 +, Alister wrote:
> Summation is a mathematical function that works on numbers Concatenation
> is the process of appending 1 string to another
>
> although they are not related to each other they do share the same
> operator(+) which is the cause of confusion. att
On Wed, 19 Sep 2012 09:03:03 -0600, Ian Kelly wrote:
> I think this restriction is mainly for efficiency. sum(['a', 'b', 'c',
> 'd', 'e']) would be the equivalent of 'a' + 'b' + 'c' + 'd' + 'e', which
> is an inefficient way to add together strings.
It might not be obvious to some people why rep
On Sep 19, 8:06 am, Neil Cerutti wrote:
> On 2012-09-19, Ian Kelly wrote:
>
> > It notes in the doc string that it does not work on strings:
>
> > sum(...)
> > sum(sequence[, start]) -> value
>
> > Returns the sum of a sequence of numbers (NOT strings) plus
> > the value of parameter
On Wed, Sep 19, 2012 at 9:06 AM, Neil Cerutti wrote:
> Are iterables and sequences different enough to warrant posting a
> bug report?
The glossary is specific about the definitions of both, so I would say yes.
http://docs.python.org/dev/glossary.html#term-iterable
http://docs.python.org/dev/glo
On 2012-09-19, Ian Kelly wrote:
> It notes in the doc string that it does not work on strings:
>
> sum(...)
> sum(sequence[, start]) -> value
>
> Returns the sum of a sequence of numbers (NOT strings) plus
> the value of parameter 'start' (which defaults to 0). When
> the sequence
On Wed, 19 Sep 2012 16:41:20 +0200, Franck Ditter wrote:
> Hello,
> I wonder why sum does not work on the string sequence in Python 3 :
>
sum((8,5,9,3))
> 25
sum([5,8,3,9,2])
> 27
sum('rtarze')
> TypeError: unsupported operand type(s) for +: 'int' and 'str'
>
> I naively thought t
On Wed, Sep 19, 2012 at 8:41 AM, Franck Ditter wrote:
> Hello,
> I wonder why sum does not work on the string sequence in Python 3 :
>
sum((8,5,9,3))
> 25
sum([5,8,3,9,2])
> 27
sum('rtarze')
> TypeError: unsupported operand type(s) for +: 'int' and 'str'
>
> I naively thought that s
On 2012-09-19, Franck Ditter wrote:
> Hello,
> I wonder why sum does not work on the string sequence in Python 3 :
>
sum((8,5,9,3))
> 25
sum([5,8,3,9,2])
> 27
sum('rtarze')
> TypeError: unsupported operand type(s) for +: 'int' and 'str'
>
> I naively thought that sum('abc') would ex
On Wed, Sep 19, 2012 at 10:41 AM, Franck Ditter wrote:
> Hello,
> I wonder why sum does not work on the string sequence in Python 3 :
>
sum((8,5,9,3))
> 25
sum([5,8,3,9,2])
> 27
sum('rtarze')
> TypeError: unsupported operand type(s) for +: 'int' and 'str'
>
> I naively thought that
Hello,
I wonder why sum does not work on the string sequence in Python 3 :
>>> sum((8,5,9,3))
25
>>> sum([5,8,3,9,2])
27
>>> sum('rtarze')
TypeError: unsupported operand type(s) for +: 'int' and 'str'
I naively thought that sum('abc') would expand to 'a'+'b'+'c'
And the error message is somewhat
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