Didier, I am sure you are right but I thought it best to deal with one
matter at a time! From Rose's posting it looked as if she was just
trying to count instances in a list, while Tuples is a much more
complicated function.
John
2008/5/9 didier deshommes <[EMAIL PROTECTED]>:
>
> On Fri, May 9, 2008 at 1:59 PM, Rose <[EMAIL PROTECTED]> wrote:
> Hi Rose,
>
>>
>> Second, it becomes pretty long went there are complex numbers in my
>> Tuples (more than 30 secondes for 7 elements).
>
> This does take time, interestingly when the numbers are symbolic:
>
> {{{
> sage: f=range(6)
>
> sage: %time Tuples(f,1);
> CPU times: user 0.00 s, sys: 0.00 s, total: 0.00 s
> Wall time: 0.00
>
> sage: u=[CC(CC.random_element(10)+i) for _ in range(5)]
>
> sage: %time Tuples(u,1);
> CPU times: user 0.48 s, sys: 0.22 s, total: 0.70 s
> Wall time: 7.12
> }}}
>
> So I'm guessing you're using symbolic numbers instead of complex
> numbers. It's easy to get them wrong:
> {{{
> sage: symbol=2+I ; type(symbol)
> <class 'sage.calculus.calculus.SymbolicArithmetic'>
>
> sage: a=CC(2+I) ; type(a)
> <type 'sage.rings.complex_number.ComplexNumber'>
> }}}
>
> Hope that helps
>
> didier
>>
>> I would like to know if there is a better way to count a Tuples of
>> complex number.
>>
>> In general, it is really long when I utilize Tuples with complex
>> number (in comparaison of doing 2 Tuples, one for real part and one
>> for imaginary part).
>>
>> >
>>
>
> >
>
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