Hi!
I sent a fix to issue #7805 which is about forcing the method _contains of
an Interval to return False when the element is a Set (currently it's
throwing an exception).
My fix is just a check on the type of other in that method - if it's a set,
I return False.
I was thinking, could we add for all the classes that inherit from Set a
list of types that can be contained?
For Interval, I would have to add in the __new__ method:
self.containedTypes = [float, int] #and possibly other numerical types.
Then, I could change my _contains method for any class implementing Set in
the following way:
def _contains(self, other):
if type(other) is not Symbol and not any(map(lambda t:
isinstance(other, t), self.containedTypes)):
return False
#do the actual calculations to see if other is contained, which will
depend on the class we are implementing
That way, I automatically ensure that other will be of the types contained
by my Set, and I would be able to extend that to more complicated sets
(say, a set of sets...).
Let me know what you think!
Sam
--
You received this message because you are subscribed to the Google Groups
"sympy" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/sympy.
To view this discussion on the web visit
https://groups.google.com/d/msgid/sympy/1f2dabe5-3c42-4948-84e3-b2bee0ce5387%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.
