Numpy Array of Sets

[LJ]

Thank you for the reply.

So, as long as I access and modify the elements of, for example, 

A=array([[set([])]*4]*3)


as (for example):

a[0][1] = a[0][1] | set([1,2])

or:

a[0][1]=set([1,2])

then I should have no problems?