Thanks for all.
Christophe.
Luke a écrit :
> Python has a builtin set data type. For example:
>
>>>> x= [1,2,3,5,2,1]
>>>> set(x)
>>>>
> set(1, 2, 3, 5)
>
> Sympy has an Interval class, but it seems at the moment it doesn't
> have things like the intersection / union operators, nor whether the
> interval is open or closed.
>
> I'm not sure if this Interval class was intended for the application
> you mentioned, but if so, we should add some functionality, it
> wouldn't be very hard. The file is:
> sympy/core/interval.py
>
> Useful methods to add that I can think of:
> -- union / intersection / difference
> -- open / closed
> -- force start to be <= end ??? so that you couldn't make an interval
> like: [2, 1]?
>
> ~Luke
>
> On Jul 3, 10:44 am, Christophe <projet...@gmail.com> wrote:
>
>> Hello,
>> I would like to know if it is possible to work with sets.
>>
>> A second question. Is the a way to do something like intersection([1 ;
>> 2];[1.5 ; 5]) and union([1 ; 2];[1.5 ; 5]) where [a ; b]:={x |
>> a<=x<=b}?
>>
>> Best regards.
>> Christophe
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