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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